List of nuclides

This list of nuclides shows observed nuclides that either are stable or, if radioactive, have half-lives longer than one hour. At least 3,000 nuclides have been experimentally characterized. A selection of those with decay half-lives less than 60 minutes are shown.

A nuclide is defined conventionally as an experimentally examined bound collection of protons and neutrons that either is stable or has an observed decay mode.

Introduction

253 nuclides are considered stable. Many of these in theory could decay through spontaneous fission, alpha decay, double beta decay, etc. with a very long half-life, but no radioactive decay has yet been observed. Thus the number of stable nuclides is subject to change if some of these 253 are determined to be very long-lived radioactive nuclides in the future. If a decay has been predicted theoretically but never observed experimentally, it is given in parentheses. In theory, spontaneous fission is possible for all elements with atomic numbers >40, but has not been observed for most elements up to lead (82). The list lists nuclides unstable only to this fission mechanism, before nuclides theoretically unstable to additional mechanisms. Those that have been checked for radioactivity are indicated with "> number" and show the lower limit for the half-life based on experimental observation. Such nuclides are considered to be "stable" until a decay has been observed in some fashion. For example, tellurium-123 was reported to be radioactive, but the same experimental group later retracted this report, and it presently remains observationally stable.

The next group is the primordial radioactive nuclides. These have been measured to be radioactive, or decay products have been identified (Te-130, Ba-130). There are (currently) 33 of these, of which 29 have half-lives considerably longer than the age of the universe (13.8 billion years). With most of these 29, decay is difficult to observe and for most purposes they can be regarded as effectively stable. Bismuth-209 is notable as the only naturally occurring isotope of an element long considered stable. A further 4 nuclides, thorium-232, uranium-238, potassium-40 and uranium-235 have half lives between 14 billion and 700 million years, which means they have experienced measurable decay since the formation of the solar system about 4.6 billion years ago, but still exist on earth in significant quantities. They are the primary source of radiogenic heat and radioactive decay products. Together, there are a total of 286 primordial nuclides.^[1]

The list then covers the ~700 radionuclides with half-lives longer than 1 hour, split into two tables, half lives greater than one day and less than one day. There are also more than 3000 radionuclides with half lives less than an hour, listed are those that exist naturally in decay chains

Over 60 nuclides that have half-lives too short to be primordial can be detected in nature as a result of later production by natural processes, mostly in trace amounts. These include ~44 radionuclides occurring in the decay chains of primordial uranium and thorium (radiogenic nuclides), such as radon-222. Others are the products of interactions with energetic cosmic-rays (e.g. cosmic ray spallation) (cosmogenic nuclides) such as carbon-14. This gives a total of about 350 naturally occurring nuclides. Other nuclides may be occasionally produced naturally but are difficult to detect by rare cosmogenic interactions or as a result of other natural nuclear reactions (nucleogenic nuclides).

Further shorter lived nuclides have been detected in the spectra of stars (e.g. technetium, promethium, californium). The remaining nuclides are known solely from artificial nuclear transmutation. Some, such as caesium-137, are found in the environment but as a result of contamination from man-made nuclear fission product releases (nuclear weapons, nuclear reactors, and other processes). Other are produced artificially for industrial or medical purposes.

List legend

All the radionuclides, starting with the longest-lived primordial radionuclides, are sorted by decreasing half-life, but the tables are sortable by other criteria.

no (number)

A running positive integer for reference. Especially for nuclides with short half-lives, this number, i.e. position in this table, might be changed in the future.

nuclide column

Nuclide identifiers are given by their atomic mass number A and the symbol for the corresponding chemical element (corresponding to the unique proton number). In the cases that this is not the ground state, this is indicated by a m for metastable appended to the mass number. Sorting here sorts by mass number.

Z, N column

The number of protons and number of neutrons.

energy column

The column labeled "energy" denotes the energy equivalent of the difference between the mass per nucleon of this nuclide and the mass of a neutron (so all nuclides get a positive value) in MeV, formally: m_n − m_nuclide / A. Thus the mass of the nuclide (in Daltons) is A (m_n − E / k) where E is the energy, m_n is 1.008664915 Da and k = 931.4941 the conversion factor between MeV and Daltons.

half-life column

The main column shows times in seconds (31,556,926 seconds = 1 year), a second column showing half life in more usual units (year, day) is also provided. Entries starting with a ">" indicates that no decay has ever been observed, with null experiments establishing lower limits for the half-life. Such elements are considered stable unless a decay can be observed (establishing an actual estimate for the half-life). Note half lives may be imprecise estimates and can be subject to significant revision.

decay mode column

α	α decay
β−	β− decay
β−β−	double β− decay
ε	electron capture
β+	β+ decay
β+β+	double β+ decay
SF	spontaneous fission
IT	isomeric transition

Decay modes in parentheses are still not observed through experiment but are, by their energy, predicted to occur. Numbers in brackets indicate probability of that decay mode occurring in %, tr indicate <0.1%. Spontaneous fission is not shown as a theoretical decay mode for stable nuclides where other modes are possible.

decay energy column

Multiple values for (maximal) decay energy are mapped to decay modes in their order. The decay energy listed is for the specific nuclide only, not for the whole decay chain. It includes the energy lost to neutrinos.

notes column

CG: Cosmogenic nuclide;

DP: Naturally occurring decay product (of thorium-232, uranium-238 and uranium-235;

FP: Fission product of Uranium-235 / Plutonium-239 (only those with a half life over one day are shown);

IM: Industry or medically used radionuclide.^[2]

Full list

Stable nuclides

no	nuclide	A	Z	N	energy	half-life (s)	decay mode	decay energy (MeV)
1	56Fe	56	26	30	7000915356700000000♠9.153567
2	62Ni	62	28	34	7000914787699999999♠9.147877
3	60Ni	60	28	32	7000914586199999999♠9.145862
4	58Fe	58	26	32	7000914293799999999♠9.142938
5	52Cr	52	24	28	7000913703700000000♠9.137037
6	57Fe	57	26	31	7000912711900000000♠9.127119
7	59Co	59	27	32	7000912604600000000♠9.126046
8	54Cr	54	24	30	7000912563300000000♠9.125633
9	61Ni	61	28	33	7000912412900000000♠9.124129
10	55Mn	55	25	30	7000912061100000000♠9.120611
11	64Ni	64	28	36	7000911975400000000♠9.119754
12	66Zn	66	30	36	7000911525800000000♠9.115258
13	53Cr	53	24	29	7000911443500000000♠9.114435
14	63Cu	63	29	34	7000911227200000000♠9.112272
15	65Cu	65	29	36	7000910615400000000♠9.106154
16	68Zn	68	30	38	7000910084500000000♠9.100845
17	50Ti	50	22	28	7000909986100000000♠9.099861
18	51V	51	23	28	7000909488400000000♠9.094884
19	67Zn	67	30	37	7000908446799999999♠9.084468
20	48Ti	48	22	26	7000908148800000000♠9.081488
21	72Ge	72	32	40	7000907946500000000♠9.079465
22	70Ge	70	32	38	7000907937199999999♠9.079372
23	69Ga	69	31	38	7000907607800000000♠9.076078
24	88Sr	88	38	50	7000907043799999999♠9.070438
25	74Ge	74	32	42	7000906352200000000♠9.063522
26	49Ti	49	22	27	7000906232299999999♠9.062323
27	76Se	76	34	42	7000906148499999999♠9.061485
28	71Ga	71	31	40	7000905921800000000♠9.059218
29	78Se	78	34	44	7000905884200000000♠9.058842
30	90Zr	90	40	50	7000905763100000000♠9.057631
31	89Y	89	39	50	7000905674300000000♠9.056743
32	86Sr	86	38	48	7000905416000000000♠9.054160
33	82Kr	82	36	46	7000905412600000000♠9.054126
34	84Kr	84	36	48	7000905264900000000♠9.052649
35	73Ge	73	32	41	7000904800600000000♠9.048006
36	87Sr	87	38	49	7000904696399999999♠9.046964
37	75As	75	33	42	7000904509300000000♠9.045093
38	80Kr	80	36	44	7000904498400000000♠9.044984
39	77Se	77	34	43	7000904015300000000♠9.040153
40	85Rb	85	37	48	7000903799800000000♠9.037998
41	91Zr	91	40	51	7000903715600000000♠9.037156
42	83Kr	83	36	47	7000903496600000000♠9.034966
43	79Br	79	35	44	7000903422000000000♠9.034220
44	81Br	81	35	46	7000903397900000000♠9.033979
45	92Zr	92	40	52	7000903278300000000♠9.032783
46	46Ti	46	22	24	7000903053199999999♠9.030532
47	47Ti	47	22	25	7000902733600000000♠9.027336
48	44Ca	44	20	24	7000901379300000000♠9.013793
49	42Ca	42	20	22	7000898911599999999♠8.989116
50	38Ar	38	18	20	7000898487000000000♠8.984870
51	45Sc	45	21	24	7000898394500000000♠8.983945
52	43Ca	43	20	23	7000896455100000000♠8.964551
53	34S	34	16	18	7000895167500000000♠8.951675
54	40Ar	40	18	22	7000894732499999999♠8.947325
55	41K	41	19	22	7000893862300000000♠8.938623
56	39K	39	19	20	7000893817400000000♠8.938174
57	37Cl	37	17	20	7000892976000000000♠8.929760
58	36S	36	16	20	7000892310799999999♠8.923108
59	35Cl	35	17	18	7000890028500000000♠8.900285
60	30Si	30	14	16	7000888576100000000♠8.885761
61	32S	32	16	16	7000888431800000000♠8.884318
62	33S	33	16	17	7000887696399999999♠8.876964
63	31P	31	15	16	7000885974399999999♠8.859744
64	28Si	28	14	14	7000883893499999999♠8.838935
65	29Si	29	14	15	7000882632699999999♠8.826327
66	27Al	27	13	14	7000870824200000000♠8.708242
67	26Mg	26	12	14	7000869498100000000♠8.694981
68	24Mg	24	12	12	7000865191100000000♠8.651911
69	25Mg	25	12	13	7000859904700000000♠8.599047
70	23Na	23	11	12	7000848567500000000♠8.485675
71	22Ne	22	10	12	7000843608700000000♠8.436087
72	20Ne	20	10	10	7000842342200000000♠8.423422
73	16O	16	8	8	7000836739000000000♠8.367390
74	21Ne	21	10	11	7000834428000000000♠8.344280
75	19F	19	9	10	7000814961200000000♠8.149612
76	17O	17	8	9	7000811890400000000♠8.118904
77	18O	18	8	10	7000811474400000000♠8.114744
78	12C	12	6	6	7000807132700000000♠8.071327
79	15N	15	7	8	7000806459400000000♠8.064594
80	14N	14	7	7	7000786682700000000♠7.866827
81	13C	13	6	7	7000783094300000000♠7.830943
82	4He	4	2	2	7000746507700000000♠7.465077
83	11B	11	5	6	7000728333700000000♠7.283337
84	10B	10	5	5	7000686625700000000♠6.866257
85	9Be	9	4	5	7000681048300000000♠6.810483
86	7Li	7	3	4	7000594159900000000♠5.941599
87	6Li	6	3	3	7000572352700000000♠5.723527
88	3He	3	2	1	7000309432700000000♠3.094327
89	2H	2	1	1	7000150332700000000♠1.503327
90	1H	1	1	0	6999782327000000000♠0.782327
91	94Mo	94	42	52	7000901185600000000♠9.011856		(SF)	< 4.485
92	93Nb	93	41	52	7000900905100000000♠9.009051		(SF)	< 0.943
93	96Mo	96	42	54	7000899622900000000♠8.996229		(SF)	< 5.771
94	95Mo	95	42	53	7000899456400000000♠8.994564		(SF)	< 4.531
95	97Mo	97	42	55	7000897380600000000♠8.973806		(SF)	< 6.226
96	98Ru	98	44	54	7000897157200000000♠8.971572		(SF)	< 11.690
97	100Ru	100	44	56	7000896351700000000♠8.963517		(SF)	< 13.634
98	99Ru	99	44	55	7000895634800000000♠8.956348		(SF)	< 12.368
99	102Ru	102	44	58	7000894483700000000♠8.944837		(SF)	< 12.049
100	101Ru	101	44	57	7000894211700000000♠8.942117		(SF)	< 13.205
101	104Pd	104	46	58	7000893084700000000♠8.930847		(SF)	< 18.969
102	103Rh	103	45	58	7000892591000000000♠8.925910		(SF)	< 15.462
103	106Pd	106	46	60	7000891946000000000♠8.919460		(SF)	< 16.806
104	105Pd	105	46	59	7000891335600000000♠8.913356		(SF)	< 18.247
105	108Pd	108	46	62	7000890025299999999♠8.900253		(SF)	< 16.102
106	107Ag	107	47	60	7000889751399999999♠8.897514		(SF)	< 20.512
107	110Cd	110	48	62	7000889271800000000♠8.892718		(SF)	< 22.486
108	109Ag	109	47	62	7000888530000000000♠8.885300		(SF)	< 19.241
109	112Cd	112	48	64	7000888007700000000♠8.880077		(SF)	< 20.733
110	111Cd	111	48	63	7000887544499999999♠8.875445		(SF)	< 21.883
111	114Sn	114	50	64	7000886572200000000♠8.865722		(SF)	< 27.965
112	113In	113	49	64	7000886221200000000♠8.862212		(SF)	< 24.281
113	116Sn	116	50	66	7000886036200000000♠8.860362		(SF)	< 25.905
114	115Sn	115	50	65	7000885424899999999♠8.854249		(SF)	< 26.791
115	118Sn	118	50	68	7000884807300000000♠8.848073		(SF)	< 23.815
116	117Sn	117	50	67	7000884397700000000♠8.843977		(SF)	< 25.334
117	120Sn	120	50	70	7000883053700000000♠8.830537		(SF)	< 21.824
118	119Sn	119	50	69	7000882820100000000♠8.828201		(SF)	< 23.140
119	121Sb	121	51	70	7000881178300000000♠8.811783		(SF)	< 25.718
120	122Te	122	52	70	7000881160600000000♠8.811606		(SF)	< 30.974
121	124Te	124	52	72	7000880136400000000♠8.801364		(SF)	< 28.221
122	123Sb	123	51	72	7000879672700000000♠8.796727		(SF)	< 23.454
123	126Te	126	52	74	7000878612600000000♠8.786126		(SF)	< 26.011
124	125Te	125	52	73	7000878350500000000♠8.783505		(SF)	< 26.966
125	128Xe	128	54	74	7000877335899999999♠8.773359		(SF)	< 35.047
126	127I	127	53	74	7000877198100000000♠8.771981		(SF)	< 29.961
127	130Xe	130	54	76	7000876272500000000♠8.762725		(SF)	< 32.483
128	129Xe	129	54	75	7000875890399999999♠8.758904		(SF)	< 33.947
129	132Xe	132	54	78	7000874769500000000♠8.747695		(SF)	< 30.885
130	131Xe	131	54	77	7000874625300000000♠8.746253		(SF)	< 31.140
131	134Ba	134	56	78	7000873513299999999♠8.735133		(SF)	< 40.520
132	133Cs	133	55	78	7000873351500000000♠8.733515		(SF)	< 34.753
133	136Ba	136	56	80	7000872490799999999♠8.724908		(SF)	< 38.041
134	135Ba	135	56	79	7000872207200000000♠8.722072		(SF)	< 39.357
135	137Ba	137	56	81	7000871162799999999♠8.711628		(SF)	< 35.722
136	138Ba	138	56	82	7000871090399999999♠8.710904		(SF)	< 34.302
137	140Ce	140	58	82	7000870049400000000♠8.700494		(SF)	< 43.633
138	139La	139	57	82	7000869889200000000♠8.698892		(SF)	< 38.944
139	141Pr	141	59	82	7000868140500000000♠8.681405		(SF)	< 48.450
140	142Nd	142	60	82	7000867664600000000♠8.676646		(SF)	< 53.264
141	156Gd	156	64	92	7000853634200000000♠8.536342		(SF)	< 71.541
142	157Gd	157	64	93	7000852247800000000♠8.522478		(SF)	< 70.531
143	158Gd	158	64	94	7000851877500000000♠8.518775		(SF)	< 70.965
144	159Tb	159	65	94	7000850868000000000♠8.508680		(SF)	< 74.878
145	163Dy	163	66	97	7000847860700000000♠8.478607		(SF)	< 79.055
146	164Dy	164	66	98	7000847360400000000♠8.473604		(SF)	< 79.499
147	54Fe	54	26	28	7000911304000000000♠9.113040		(β+β+)	0.680
148	58Ni	58	28	30	7000910973600000000♠9.109736		(β+β+)	1.926
149	74Se	74	34	40	7000904717499999999♠9.047175		(β+β+)	1.209
150	80Se	80	34	46	7000904332600000000♠9.043326		(β−β−)	0.134
151	86Kr	86	36	50	7000903953200000000♠9.039532		(β−β−)	1.256
152	84Sr	84	38	46	7000903137500000000♠9.031375		(β+β+)	1.787
153	92Mo	92	42	50	7000901486000000000♠9.014860		(β+β+)	1.649
154	94Zr	94	40	54	7000899969800000000♠8.999698		(β−β−)	1.144
155	98Mo	98	42	56	7000897042600000000♠8.970426		(β−β−)	0.112
156	96Ru	96	44	52	7000896791100000000♠8.967911		(β+β+)	2.719
157	102Pd	102	46	56	7000893333700000000♠8.933337		(β+β+)	1.172
158	104Ru	104	44	60	7000891833699999999♠8.918337		(β−β−)	1.300
159	36Ar	36	18	18	7000891110499999999♠8.911105		(β+β+)	0.433
160	110Pd	110	46	64	7000887450000000000♠8.874500		(β−β−)	2.000
161	112Sn	112	50	62	7000886294400000000♠8.862944		(β+β+)	1.922
162	122Sn	122	50	72	7000880859000000000♠8.808590		(β−β−)	0.366
163	124Sn	124	50	74	7000878291400000000♠8.782914		(β−β−)	2.287
164	126Xe	126	54	72	7000877901000000000♠8.779010		(β+β+)	0.897
165	143Nd	143	60	83	7000865879200000000♠8.658792		(α)	0.521
166	144Sm	144	62	82	7000864057700000000♠8.640577		(β+β+)	1.781
167	145Nd	145	60	85	7000863296300000000♠8.632963		(α)	1.578
168	146Nd	146	60	86	7000862564899999999♠8.625649		(β−β−, α)	0.070, 1.182
169	148Nd	148	60	88	7000859438800000000♠8.594388		(β−β−, α)	1.929, 0.599
170	150Sm	150	62	88	7000858504300000000♠8.585043		(α)	1.449
171	152Sm	152	62	90	7000856322700000000♠8.563227		(α)	0.220
172	153Eu	153	63	90	7000855089300000000♠8.550893		(α)	0.274
173	154Gd	154	64	90	7000854998500000000♠8.549985		(α)	0.081
174	154Sm	154	62	92	7000854185700000000♠8.541857		(β−β−)	1.251
175	155Gd	155	64	91	7000853634100000000♠8.536341		(α)	0.081
176	156Dy	156	66	90	7000852344300000000♠8.523443		(β+β+, α)	2.011, 1.758
177	158Dy	158	66	92	7000851697300000000♠8.516973		(β+β+, α)	0.283, 0.875
178	160Dy	160	66	94	7000850681600000000♠8.506816		(α)	0.439
179	161Dy	161	66	95	7000849406699999999♠8.494067		(α)	0.344
180	162Dy	162	66	96	7000849223400000000♠8.492234		(α)	0.085
181	162Er	162	68	94	7000848085200000000♠8.480852		(β+β+, α)	1.844, 1.646
182	164Er	164	68	96	7000847346200000000♠8.473462		(β+β+, α)	0.024, 1.304
183	165Ho	165	67	98	7000846468900000000♠8.464689		(α)	0.139
184	166Er	166	68	98	7000846248200000000♠8.462482		(α)	0.831
185	167Er	167	68	99	7000845035000000000♠8.450350		(α)	0.666
186	168Er	168	68	100	7000844630800000000♠8.446308		(α)	0.553
187	168Yb	168	70	98	7000843784499999999♠8.437845		(β+β+, α)	1.422, 1.951
188	169Tm	169	69	100	7000843393100000000♠8.433931		(α)	1.200
189	170Yb	170	70	100	7000842879200000000♠8.428792		(α)	1.738
190	170Er	170	68	102	7000842494499999999♠8.424945		(β−β−, α)	0.654, 0.050
191	171Yb	171	70	101	7000841818200000000♠8.418182		(α)	1.559
192	172Yb	172	70	102	7000841586399999999♠8.415864		(α)	1.310
193	173Yb	173	70	103	7000840402300000000♠8.404023		(α)	0.946
194	174Yb	174	70	104	7000839862400000000♠8.398624		(α)	0.740
195	175Lu	175	71	104	7000838658900000000♠8.386589		(α)	1.620
196	176Hf	176	72	104	7000838142700000000♠8.381427		(α)	2.255
197	177Hf	177	72	105	7000837013900000000♠8.370139		(α)	2.245
198	178Hf	178	72	106	7000836595799999999♠8.365958		(α)	2.083
199	179Hf	179	72	107	7000835329300000000♠8.353293		(α)	1.806
200	180Hf	180	72	108	7000834793000000000♠8.347930		(α)	1.283
201	181Ta	181	73	108	7000833896100000000♠8.338961		(α)	1.526
202	185Re	185	75	110	7000830820400000000♠8.308204		(α)	2.195
203	187Os	187	76	111	7000829174600000000♠8.291746		(α)	2.720
204	188Os	188	76	112	7000829013800000000♠8.290138		(α)	2.143
205	189Os	189	76	113	7000827759900000000♠8.277599		(α)	1.976
206	190Os	190	76	114	7000827504500000000♠8.275045		(α)	1.378
207	191Ir	191	77	114	7000826350800000000♠8.263508		(α)	2.084
208	192Pt	192	78	114	7000826035300000000♠8.260353		(α)	2.418
209	192Os	192	76	116	7000825820200000000♠8.258202		(β−β−, α)	0.413, 0.362
210	194Pt	194	78	116	7000825051900000000♠8.250519		(α)	1.504
211	193Ir	193	77	116	7000825025900000000♠8.250259		(α)	1.017
212	195Pt	195	78	117	7000823951600000000♠8.239516		(α)	1.158
213	196Pt	196	78	118	7000823789599999999♠8.237896		(α)	0.794
214	196Hg	196	80	116	7000823371000000000♠8.233710		(β+β+, α)	0.820, 2.027
215	197Au	197	79	118	7000822940400000000♠8.229404		(α)	0.954
216	198Hg	198	80	118	7000822766300000000♠8.227663		(α)	1.383
217	198Pt	198	78	120	7000822237800000000♠8.222378		(β−β−, α)	1.047, 0.087
218	199Hg	199	80	119	7000821980499999999♠8.219805		(α)	0.824
219	200Hg	200	80	120	7000821884800000000♠8.218848		(α)	0.718
220	201Hg	201	80	121	7000820895600000000♠8.208956		(α)	0.334
221	202Hg	202	80	122	7000820670299999999♠8.206703		(α)	0.136
222	203Tl	203	81	122	7000819823000000000♠8.198230		(α)	0.911
223	204Hg	204	80	124	7000819235800000000♠8.192358		(β−β−)	0.416
224	205Tl	205	81	124	7000818752600000000♠8.187526		(α)	0.157
225	206Pb	206	82	124	7000818679100000000♠8.186791		(α)	1.137
226	207Pb	207	82	125	7000817979100000000♠8.179791		(α)	0.391
227	208Pb	208	82	126	7000817588800000000♠8.175888		(α)	0.519
228	134Xe	134	54	80	7000872897300000000♠8.728973	> 7030183000000000000♠1.83×1030	(β−β−)	0.825
229	40Ca	40	20	20	7000894248500000000♠8.942485	> 7028947000000000000♠9.47×1028	(β+β+)	0.194
230	132Ba	132	56	76	7000874128800000000♠8.741288	> 7028947000000000000♠9.47×1028	(β+β+)	0.846
231	160Gd	160	64	96	7000849600900000000♠8.496009	> 7026977999999999999♠9.78×1026	(β−β−)	1.729
232	184W	184	74	110	7000831973700000000♠8.319737	> 7026915000000000000♠9.15×1026	(α)	1.656
233	186W	186	74	112	7000829987300000000♠8.299873	> 7026852000000000000♠8.52×1026	(α)	1.123
234	183W	183	74	109	7000832469900000000♠8.324699	> 7026410000000000000♠4.10×1026	(α)	1.680
235	182W	182	74	108	7000833642399999999♠8.336424	> 7026262000000000000♠2.62×1026	(α)	1.772
236	114Cd	114	48	66	7000886098500000000♠8.860985	> 7026202000000000000♠2.02×1026	(β−β−)	0.540
237	50Cr	50	24	26	7000907651700000000♠9.076517	> 7025409999999999999♠4.10×1025	(β+β+)	1.167
238	108Cd	108	48	60	7000889773500000000♠8.897735	> 7025316000000000000♠3.16×1025	(β+β+)	0.272
239	142Ce	142	58	84	7000866666599999999♠8.666666	> 7024820000000000000♠8.20×1024	(β−β−, α)	1.417, 1.298
240	106Cd	106	48	58	7000889332699999999♠8.893327	> 7024820000000000000♠8.20×1024	(β+β+)	2.770
241	176Yb	176	70	106	7000837527100000000♠8.375271	> 7024504999999999999♠5.05×1024	(β−β−, α)	1.083, 0.570
242	204Pb	204	82	122	7000819441400000000♠8.194414	> 7024442000000000000♠4.42×1024	(α)	1.972
243	124Xe	124	54	70	7000877826400000000♠8.778264	> 7024347000000000000♠3.47×1024	(β+β+)	2.864
244	123Te	123	52	71	7000879630200000000♠8.796302	> 7024290000000000000♠2.90×1024	(β+)	0.052
245	64Zn	64	30	34	7000910263400000000♠9.102634	> 7023883999999999999♠8.84×1023	(β+β+)	1.096
246	120Te	120	52	68	7000881636900000000♠8.816369	> 7023694000000000000♠6.94×1023	(β+β+)	1.700
247	70Zn	70	30	40	7000906510900000000♠9.065109	> 7023409999999999999♠4.10×1023	(β−β−)	0.998
248	46Ca	46	20	26	7000900904700000000♠9.009047	> 7022884000000000000♠8.84×1022	(β−β−)	0.988
249	149Sm	149	62	87	7000858905800000000♠8.589058	> 7022631000000000000♠6.31×1022	(α)	1.870
250	180mTa	180	73	107	7000834276700000000♠8.342767	> 7022379000000000000♠3.79×1022	(β−, ε, α)	0.783, 0.929, 2.103
251	138Ce	138	58	80	7000870587800000000♠8.705878	> 7021284000000000000♠2.84×1021	(β+β+)	0.694
252	136Ce	136	58	78	7000870712200000000♠8.707122	> 7021221000000000000♠2.21×1021	(β+β+)	2.419
253	184Os	184	76	108	7000831185000000000♠8.311850	> 7021177000000000000♠1.77×1021	(α, β+β+)	2.963, 1.451

Primordial radioactive nuclides

no	nuclide	Z	N	energy	half-life (s)	half-life (years)	decay mode	decay energy (MeV)
254	128Te	52	76	7000874326100000000♠8.743261	7031694000000000000♠6.94×1031	7024220000000000000♠2.2×1024	β−β−	0.868
255	78Kr	36	42	7000902234900000000♠9.022349	7029290000000000000♠2.90×1029	7021919999999999999♠9.2×1021	εε	2.846
256	136Xe	54	82	7000870680499999999♠8.706805	7028750000000000000♠7.5×1028	7021238000000000000♠2.38×1021	β−β−	2.462
257	76Ge	32	44	7000903465600000000♠9.034656	7028564200000000000♠5.642×1028	7021180000000000000♠1.8×1021	β−β−	2.039
258	130Ba	56	74	7000874257400000000♠8.742574	7028379000000000000♠3.79×1028	7021120000000000000♠1.2×1021	εε	2.620
259	82Se	34	48	7000901759599999999♠9.017596	7027340800000000000♠3.408×1027	7020110000000000000♠1.1×1020	β−β−	2.995
260	116Cd	48	68	7000883614600000000♠8.836146	7026978300000000000♠9.783×1026	7019310000000000000♠3.1×1019	β−β−	2.809
261	48Ca	20	28	7000899245200000000♠8.992452	7026725800000000000♠7.258×1026	7019230000000000000♠2.3×1019	β−β−, β−	4.274, 0.0058
262	96Zr	40	56	7000896135900000000♠8.961359	7026630000000000000♠6.3×1026	7019200000000000000♠2.0×1019	β−β−	3.348
263	209Bi	83	126	7000815868900000000♠8.158689	7026599600000000000♠5.996×1026	7019190000000000000♠1.9×1019	α	3.137
264	130Te	52	78	7000876657800000000♠8.766578	7026277700000000000♠2.777×1026	7018880000000000000♠8.8×1018	β−β−	2.530
265	150Nd	60	90	7000856259400000000♠8.562594	7026249299999999999♠2.493×1026	7018790000000000000♠7.9×1018	β−β−	3.367
266	100Mo	42	58	7000893316699999999♠8.933167	7026246099999999999♠2.461×1026	7018780000000000000♠7.8×1018	β−β−	3.035
267	151Eu	63	88	7000856575900000000♠8.565759	7026157800000000000♠1.578×1026	7018500000000000000♠5.0×1018	α	1.964
268	180W	74	106	7000834712700000000♠8.347127	7025568000000000000♠5.680×1025	7018180000000000000♠1.8×1018	α	2.509
269	50V	23	27	7000905575900000000♠9.055759	7024441800000000000♠4.418×1024	7017139999999999999♠1.4×1017	β+, β−	2.205, 1.038
270	113Cd	48	65	7000885937200000000♠8.859372	7023243000000000000♠2.430×1023	7015770000000000000♠7.7×1015	β−	0.321
271	148Sm	62	86	7000860742300000000♠8.607423	7023220900000000000♠2.209×1023	7015700000000000000♠7.0×1015	α	1.986
272	144Nd	60	84	7000865294699999999♠8.652947	7022722700000000000♠7.227×1022	7015229000000000000♠2.29×1015	α	1.905
273	186Os	76	110	7000830250800000000♠8.302508	7022631200000000000♠6.312×1022	7015200000000000000♠2.0×1015	α	2.823
274	174Hf	72	102	7000839228700000000♠8.392287	7022631200000000000♠6.312×1022	7015200000000000000♠2.0×1015	α	2.497
275	115In	49	66	7000884991000000000♠8.849910	7022139200000000000♠1.392×1022	7014440000000000000♠4.4×1014	β−	0.499
276	152Gd	64	88	7000856286800000000♠8.562868	7021340800000000000♠3.408×1021	7014110000000000000♠1.1×1014	α	2.203
277	190Pt	78	112	7000826776400000000♠8.267764	7019205100000000000♠2.051×1019	7011650000000000000♠6.5×1011	α	3.252
278	147Sm	62	85	7000861059300000000♠8.610593	7018334500000000000♠3.345×1018	7011106000000000000♠1.06×1011	α	2.310
279	138La	57	81	7000869832000000000♠8.698320	7018321900000000000♠3.219×1018	7011102000000000000♠1.02×1011	ε, β−	1.737, 1.044
280	87Rb	37	50	7000904371800000000♠9.043718	7018156800000000000♠1.568×1018	7010497000000000000♠4.97×1010	β−	0.283
281	187Re	75	112	7000829173200000000♠8.291732	7018130000000000000♠1.300×1018	7010412000000000000♠4.12×1010	β−, α	0.0026, 1.653
282	176Lu	71	105	7000837466500000000♠8.374665	7018118700000000000♠1.187×1018	7010376400000000000♠3.764×1010	β−	1.193
283	232Th	90	142	7000791853300000000♠7.918533	7017443400000000000♠4.434×1017	7010140600000000000♠1.406×1010	α, SF	4.083
284	238U	92	146	7000787255100000000♠7.872551	7017141000000000000♠1.410×1017	7009447100000000000♠4.471×109	α, SF, β−β−	4.270
285	40K	19	21	7000890970699999999♠8.909707	7016393800000000000♠3.938×1016	7009125000000000000♠1.25×109	β−, ε, β+	1.311, 1.505, 1.505
286	235U	92	143	7000789719800000000♠7.897198	7016222200000000000♠2.222×1016	7008704000000000000♠7.04×108	α, SF	4.679

Radionuclides with a half life of 1 day to 100 million years

no	nuclide	Z	N	energy	half-life (s)	half-life	decay mode	notes
287	244Pu	94	150	7000782622100000000♠7.826221	7015252500000000000♠2.525×1015	7007800000000000000♠8.0×107 y	α, SF
288	146Sm	62	84	7000862613600000000♠8.626136	7015214400000000000♠2.144×1015	7007680000000000000♠6.8×107 y	α
289	92Nb	41	51	7000901098000000000♠9.010980	7015109500000000000♠1.095×1015	7007347000000000000♠3.47×107 y	β+, β−	CG
290	236U	92	144	7000789147000000000♠7.891470	7014739100000000000♠7.391×1014	7007234000000000000♠2.34×107 y	α, SF
291	205Pb	82	123	7000818727900000000♠8.187279	7014545899999999999♠5.459×1014	7007173000000000000♠1.73×107 y	β+	CG
292	129I	53	76	7000875739699999999♠8.757397	7014495500000000000♠4.955×1014	7007157000000000000♠1.57×107 y	β−	CG, FP
293	247Cm	96	151	7000780600800000000♠7.806008	7014492300000000000♠4.923×1014	7007156000000000000♠1.56×107 y	α
294	182Hf	72	110	7000832439900000000♠8.324399	7014280900000000000♠2.809×1014	7006890000000000000♠8.90×106 y	β−
295	107Pd	46	61	7000889719700000000♠8.897197	7014205100000000000♠2.051×1014	7006650000000000000♠6.50×106 y	β−	FP
296	98Tc	43	55	7000895324600000000♠8.953246	7014132500000000000♠1.325×1014	7006420000000000000♠4.20×106 y	β−
297	53Mn	25	28	7000910317500000000♠9.103175	7014118000000000000♠1.180×1014	7006374000000000000♠3.74×106 y	β+	CG
298	154Dy	66	88	7000852845700000000♠8.528457	7013946700000000000♠9.467×1013	7006300000000000000♠3.00×106 y	α
299	60Fe	26	34	7000909486100000000♠9.094861	7013826800000000000♠8.268×1013	7006262000000000000♠2.62×106 y	β−
300	97Tc	43	54	7000897050300000000♠8.970503	7013820300000000000♠8.203×1013	7006260000000000000♠2.60×106 y	β+
301	210mBi	83	127	7000814047300000000♠8.140473	7013959400000000000♠9.594×1013	7006258000000000000♠2.58×106 y	α
302	135Cs	55	80	7000872008200000000♠8.720082	7013725800000000000♠7.258×1013	7006230000000000000♠2.30×106 y	β−	FP
303	237Np	93	144	7000788198900000000♠7.881989	7013676600000000000♠6.766×1013	7006214000000000000♠2.14×106 y	α, SF	DP
304	150Gd	64	86	7000857645400000000♠8.576454	7013564900000000000♠5.649×1013	7006179000000000000♠1.79×106 y	α
305	93Zr	40	53	7000900806900000000♠9.008069	7013482800000000000♠4.828×1013	7006153000000000000♠1.53×106 y	β−	FP
306	10Be	4	6	7000681065700000000♠6.810657	7013476500000000000♠4.765×1013	7006151000000000000♠1.51×106 y	β−	CG
307	26Al	13	13	7000854095399999999♠8.540954	7013226300000000000♠2.263×1013	7005717000000000000♠717000 y	β+	CG
308	242Pu	94	148	7000784521800000000♠7.845218	7013118300000000000♠1.183×1013	7005375000000000000♠375000 y	α, SF
309	208Bi	83	125	7000816204900000000♠8.162049	7013116100000000000♠1.161×1013	7005368000000000000♠368000 y	β+
310	248Cm	96	152	7000779958600000000♠7.799586	7013109800000000000♠1.098×1013	7005348000000000000♠348000 y	α, SF
311	36Cl	17	19	7000889138000000000♠8.891380	7012949900000000000♠9.499×1012	7005301000000000000♠301000 y	β−, β+	CG, IM
312	79Se	34	45	7000903231000000000♠9.032310	7012930900000000000♠9.309×1012	7005295000000000000♠295000 y	β−	FP
313	234U	92	142	7000790830800000000♠7.908308	7012774700000000000♠7.747×1012	7005245500000000000♠245500 y	α, SF	DP
314	126Sn	50	76	7000875402600000000♠8.754026	7012725800000000000♠7.258×1012	7005223000000000000♠223000 y	β−	FP
315	81Kr	36	45	7000903051299999999♠9.030513	7012722700000000000♠7.227×1012	7005229000000000000♠229000 y	β+	CG
316	99Tc	43	56	7000895337900000000♠8.953379	7012666200000000000♠6.662×1012	7005211100000000000♠211100 y	β−	FP, DP
317	186mRe	75	111	7000829595800000000♠8.295958	7012631200000000000♠6.312×1012	7005200000000000000♠200000 y	IT
318	233U	92	141	7000791287300000000♠7.912873	7012502400000000000♠5.024×1012	7005159200000000000♠159200 y	α, SF	DP
319	236Np	93	143	7000788751400000000♠7.887514	7012486000000000000♠4.860×1012	7005154000000000000♠154000 y	β+, β−, α
320	41Ca	20	21	7000892834700000000♠8.928347	7012321900000000000♠3.219×1012	7005102000000000000♠102000 y	β+	CG
321	59Ni	28	31	7000910786300000000♠9.107863	7012239800000000000♠2.398×1012	7004760000000000000♠76000 y	β+
322	230Th	90	140	7000793713600000000♠7.937136	7012237900000000000♠2.379×1012	7004754000000000000♠75400 y	α, SF	DP
323	137La	57	80	7000870710100000000♠8.707101	7012189300000000000♠1.893×1012	7004600000000000000♠60000 y	β+
324	202Pb	82	120	7000819971400000000♠8.199714	7012165700000000000♠1.657×1012	7004525000000000000♠52500 y	β+, α
325	231Pa	91	140	7000792662700000000♠7.926627	7012103400000000000♠1.034×1012	7004327700000000000♠32770 y	α, SF	DP
326	239Pu	94	145	7000786802200000000♠7.868022	7011760900000000000♠7.609×1011	7004241100000000000♠24110 y	α, SF	IM, DP
327	94Nb	41	53	7000899009900000000♠8.990099	7011640600000000000♠6.406×1011	7004203000000000000♠20300 y	β−	CG
328	245Cm	96	149	7000782232900000000♠7.822329	7011268200000000000♠2.682×1011	8500 y	α, SF
329	250Cm	96	154	7000777937100000000♠7.779371	7011261900000000000♠2.619×1011	8300 y	SF, α, β−
330	243Am	95	148	7000783603500000000♠7.836035	7011232600000000000♠2.326×1011	7371 y	α, SF
331	229Th	90	139	7000794212700000000♠7.942127	7011231599999999999♠2.316×1011	7339 y	α	DP
332	240Pu	94	146	7000786246500000000♠7.862465	7011206999999999999♠2.070×1011	6560 y	α, SF
333	14C	6	8	7000785562000000000♠7.855620	7011179900000000000♠1.799×1011[3]	5701 y[3]	β−	CG, IM
334	246Cm	96	150	7000781678100000000♠7.816781	7011150200000000000♠1.502×1011	4760 y	α, SF
335	163Ho	67	96	7000847859100000000♠8.478591	7011144200000000000♠1.442×1011	4570 y	β+
336	93Mo	42	51	7000900469300000000♠9.004693	7011126200000000000♠1.262×1011	4000 y	β+
337	226Ra	88	138	7000796659700000000♠7.966597	7010504900000000000♠5.049×1010	1600 y	α	DP
338	247Bk	97	150	7000780618200000000♠7.806182	7010435500000000000♠4.355×1010	1380 y	α
339	166mHo	67	99	7000845127300000000♠8.451273	7010378700000000000♠3.787×1010	1200 y	β−
340	251Cf	98	153	7000777596900000000♠7.775969	7010283400000000000♠2.834×1010	898 y	α, SF
341	91Nb	41	50	7000902332700000000♠9.023327	7010214600000000000♠2.146×1010	680 y	β+
342	194Hg	80	114	7000823727100000000♠8.237271	7010140100000000000♠1.401×1010	444 y	β+
343	108mAg	47	61	7000888143900000000♠8.881439	7010138199999999999♠1.382×1010	437.9 y	β+, IT
344	241Am	95	146	7000785167600000000♠7.851676	7010136400000000000♠1.364×1010	432.2 y	α, SF	IM
345	249Cf	98	151	7000779130500000000♠7.791305	7010110800000000000♠1.108×1010	351.1 y	α, SF
346	39Ar	18	21	7000892368600000000♠8.923686	7009848900000000000♠8.489×109	269 y	β−	CG
347	192mIr	77	115	7000825187500000000♠8.251875	7009760500000000000♠7.605×109	241 y	IT
348	158Tb	65	93	7000851105500000000♠8.511055	7009568000000000000♠5.680×109	180 y	β+, β−
349	242mAm	95	147	7000784191300000000♠7.841913	7009445000000000000♠4.450×109	141 y	IT, α, SF
350	32Si	14	18	7000882385599999999♠8.823856	7009416600000000000♠4.166×109	132 y	β−	CG
351	209Po	84	125	7000814963300000000♠8.149633	7009395100000000000♠3.951×109	[4]125.2 y	α, β+
352	63Ni	28	35	7000911121000000000♠9.111210	7009315900000000000♠3.159×109	101 y	β−	IM
353	151Sm	62	89	7000856525100000000♠8.565251	7009284000000000000♠2.840×109	90.0 y	β−	FP
354	238Pu	94	144	7000787735800000000♠7.877358	7009276800000000000♠2.768×109	87.7 y	α, SF	IM, DP
355	157Tb	65	92	7000852209600000000♠8.522096	7009224100000000000♠2.241×109	71.0 y	β+
356	148Gd	64	84	7000858670600000000♠8.586706	7009223700000000000♠2.237×109	70.9 y	α
357	232U	92	140	7000792214300000000♠7.922143	7009217400000000000♠2.174×109	68.9 y	α, SF
358	44Ti	22	22	7000892470200000000♠8.924702	7009189300000000000♠1.893×109	59.1 y	β+
359	193Pt	78	115	7000824996500000000♠8.249965	7009157800000000000♠1.578×109	50.0 y	β+
360	121mSn	50	71	7000880849900000000♠8.808499	7009138500000000000♠1.385×109	43.89 y	IT, β−
361	150Eu	63	87	7000856997400000000♠8.569974	7009116400000000000♠1.164×109	36.89 y	β+
362	42Ar	18	24	7000889092300000000♠8.890923	7009103800000000000♠1.038×109	32.9 y	β−
363	207Bi	83	124	7000816820899999999♠8.168209	7009103800000000000♠1.038×109	31.6 y	β+
364	178m2Hf	72	106		7008977600000000000♠9.776×108	31 y	IT
365	137Cs	55	82	7000870304700000000♠8.703047	7008947700000000000♠9.477×108	30.1 y	β−	FP, IM
366	243Cm	96	147	7000783600400000000♠7.836004	7008918300000000000♠9.183×108	29.1 y	α, β+, SF
367	90Sr	38	52	7000902623900000000♠9.026239	7008911999999999999♠9.120×108	28.9 y	β−	FP, IM
368	210Pb	82	128	7000814146200000000♠8.141462	7008700600000000000♠7.006×108	22.2 y	β−, α	DP, IM
369	227Ac	89	138	7000795744700000000♠7.957447	7008687100000000000♠6.871×108	21.77 y	β−, α	DP
370	244Cm	96	148	7000783176300000000♠7.831763	7008571200000000000♠5.712×108	18.1 y	α, SF
371	145Pm	61	84	7000863183800000000♠8.631838	7008558600000000000♠5.586×108	17.7 y	β+, α
372	93mNb	41	52		7008508399999999999♠5.084×108	16.1 y	IT
373	241Pu	94	147	7000785159000000000♠7.851590	7008451000000000000♠4.510×108	14.3 y	β−, α, SF
374	113mCd	48	65		7008438000000000000♠4.380×108	13.9 y	β−, IT	FP
375	152Eu	63	89	7000855089700000000♠8.550897	7008426199999999999♠4.262×108	13.51 y	β+, β−
376	250Cf	98	152	7000778664000000000♠7.786640	7008412800000000000♠4.128×108	13.08 y	α, SF
377	3H	1	2	7000308799400000000♠3.087994	7008388800000000000♠3.888×108	12.32 y	β−	CG, IM
378	85Kr	36	49	7000902991900000000♠9.029919	7008338400000000000♠3.384×108	10.72 y	β−	FP, IM
379	133Ba	56	77	7000872962400000000♠8.729624	7008331900000000000♠3.319×108	10.52 y	β+
380	248Bk	97	151	7000779681100000000♠7.796811	> 7008284000000000000♠2.840×108	9.00 y	α
381	154Eu	63	91	7000853720000000000♠8.537200	7008271100000000000♠2.711×108	8.60 y	β−, β+
382	194Os	76	118	7000823850800000000♠8.238508	7008189300000000000♠1.893×108	6.0 y	β−
383	228Ra	88	140	7000794439000000000♠7.944390	7008181500000000000♠1.815×108	5.75 y	β−	DP
384	146Pm	61	85	7000861557400000000♠8.615574	7008174500000000000♠1.745×108	5.53 y	β+, β−
385	60Co	27	33	7000909881100000000♠9.098811	7008166300000000000♠1.663×108	5.27 y	β−	IM
386	155Eu	63	92	7000853471100000000♠8.534711	7008150000000000000♠1.500×108	4.75 y	β−	FP
387	204Tl	81	123	7000819067100000000♠8.190671	7008119300000000000♠1.193×108	3.78 y	β−, β+	IM
388	174Lu	71	103	7000839072600000000♠8.390726	7008104500000000000♠1.045×108	3.31 y	β+
389	101Rh	45	56	7000893675300000000♠8.936753	7008104099999999999♠1.041×108	3.3 y	β+
390	102mRh	45	57	7000892068000000000♠8.920680	7007915199999999999♠9.152×107	2.9 y	β+, IT
391	208Po	84	124	7000815531500000000♠8.155315	7007914500000000000♠9.145×107	2.898 y	α, β+
392	236Pu	94	142	7000788953600000000♠7.889536	7007901900000000000♠9.019×107	2.858 y	α, SF
393	125Sb	51	74	7000877736700000000♠8.777367	7007870500000000000♠8.705×107	2.759 y	β−	FP
394	55Fe	26	29	7000911640700000000♠9.116407	7007863700000000000♠8.637×107	2.737 y	β+
395	252Cf	98	154	7000776960500000000♠7.769605	7007834700000000000♠8.347×107	2.645 y	α, SF	IM
396	147Pm	61	86	7000860906800000000♠8.609068	7007827900000000000♠8.279×107	2.624 y	β−	FP, DP
397	22Na	11	11	7000830689100000000♠8.306891	7007821299999999999♠8.213×107	2.603 y	β+	CG
398	134Cs	55	79	7000871976800000000♠8.719768	7007651700000000000♠6.517×107	2.065 y	β−, β+	FP
399	171Tm	69	102	7000841762000000000♠8.417620	7007605900000000000♠6.059×107	1.92 y	β−
400	228Th	90	138	7000795390600000000♠7.953906	7007603300000000000♠6.033×107	1.912 y	α	DP
401	172Hf	72	100	7000839925200000000♠8.399252	7007590100000000000♠5.901×107	1.87 y	β+
402	179Ta	73	106	7000835270300000000♠8.352703	7007574300000000000♠5.743×107	1.82 y	β+
403	173Lu	71	102	7000840014700000000♠8.400147	7007432300000000000♠4.323×107	1.37 y	β+
404	252Es	99	153	7000776462100000000♠7.764621	7007407500000000000♠4.075×107	1.291 y	α, β+, β−
405	109Cd	48	61	7000888332700000000♠8.883327	7007398600000000000♠3.986×107	1.263 y	β+
406	235Np	93	142	7000789666900000000♠7.896669	7007342200000000000♠3.422×107	1.084 y	β+, α
407	106Ru	44	62	7000888568600000000♠8.885686	7007322800000000000♠3.228×107	1.023 y	β−	FP
408	144Pm	61	83	7000863675100000000♠8.636751	7007313600000000000♠3.136×107	363 d	β+
409	145Sm	62	83	7000862759000000000♠8.627590	7007293800000000000♠2.938×107	340 d	β+
410	248Cf	98	150	7000780019800000000♠7.800198	7007288099999999999♠2.881×107	333.4 d	α, SF
411	249Bk	97	152	7000779080500000000♠7.790805	7007285100000000000♠2.851×107	330 d	β−, α, SF
412	49V	23	26	7000905003999999999♠9.050040	7007284300000000000♠2.843×107	329.1 d	β+
413	54Mn	25	29	7000910013099999999♠9.100131	7007269700000000000♠2.697×107	312.2 d	β+, β−	IM
414	119m1Sn	50	69		7007253399999999999♠2.534×107	293.1 d	IT
415	144Ce	58	86	7000862991800000000♠8.629918	7007246200000000000♠2.462×107	285 d	β−	FP
416	254Es	99	155	7000774852400000000♠7.748524	7007238200000000000♠2.382×107	275.7 d	α, β−, SF, β+
417	57Co	27	30	7000911245400000000♠9.112454	7007234800000000000♠2.348×107	271.8 d	β+	IM
418	68Ge	32	36	7000905632700000000♠9.056327	7007234100000000000♠2.341×107	271 d	β+	IM
419	143Pm	61	82	7000865150900000000♠8.651509	7007229000000000000♠2.290×107	265 d	β+
420	110mAg	47	63	7000886535499999999♠8.865355	7007215800000000000♠2.158×107	249.8 d	β−, IT
421	65Zn	30	35	7000908535200000000♠9.085352	7007210500000000000♠2.105×107	243.6 d	β+	IM
422	153Gd	64	89	7000854773100000000♠8.547731	7007207700000000000♠2.077×107	240.4 d	β+	IM
423	102Rh	45	57		7007178800000000000♠1.788×107	207 d	β+, β−
424	195Au	79	116	7000823835300000000♠8.238353	7007160800000000000♠1.608×107	186.1 d	β+
425	194mIr	77	117	7000823802500000000♠8.238025	7007147700000000000♠1.477×107	170.9 d	β−
426	184mRe	75	109	7000831067000000000♠8.310670	7007146000000000000♠1.460×107	169 d	IT, β+
427	242Cm	96	146	7000784486000000000♠7.844860	7007140700000000000♠1.407×107	162.8 d	α, SF
428	45Ca	20	25	7000897826100000000♠8.978261	7007140500000000000♠1.405×107	162.6 d	β−
429	177mLu	71	106	7000836182900000000♠8.361829	7007138599999999999♠1.386×107	160.4 d	β−, IT
430	121mTe	52	69	7000880074900000000♠8.800749	7007133100000000000♠1.331×107	154.1 d	IT, β+
431	159Dy	66	93	7000850637800000000♠8.506378	7007124800000000000♠1.248×107	144.4 d	β+
432	174m1Lu	71	103		7007122700000000000♠1.227×107	142 d	IT, EC
433	210Po	84	126	7000814729500000000♠8.147295	7007119600000000000♠1.196×107	138.4 d	α	DP
434	139Ce	58	81	7000869688100000000♠8.696881	7007118900000000000♠1.189×107	137.6 d	β+
435	123Sn	50	73	7000878531100000000♠8.785311	7007111600000000000♠1.116×107	129.2 d	β−
436	170Tm	69	101	7000842309599999999♠8.423096	7007111100000000000♠1.111×107	128.6 d	β−, β+
437	151Gd	64	87	7000856268500000000♠8.562685	7007107100000000000♠1.071×107	124 d	β+, α
438	181W	74	107	7000833792399999999♠8.337924	7007104700000000000♠1.047×107	121.2 d	β+
439	75Se	34	41	7000903358100000000♠9.033581	7007103500000000000♠1.035×107	119.8 d	β+	IM
440	123mTe	52	71		7007103000000000000♠1.03×107	119.2 d	IT
441	113Sn	50	63	7000885303500000000♠8.853035	7006994400000000000♠9.944×106	115.1 d	β+
442	182Ta	73	109	7000832645600000000♠8.326456	7006988700000000000♠9.887×106	114.4 d	β−
443	127mTe	52	75	7000876575899999999♠8.765759	7006941800000000000♠9.418×106	109 d	IT
444	88Y	39	49	7000902927200000000♠9.029272	7006921200000000000♠9.212×106	106.6 d	β+
445	257Fm	100	157	7000772661900000000♠7.726619	7006868300000000000♠8.683×106	100.5 d	α, SF
446	185Os	76	109	7000830273000000000♠8.302730	7006808700000000000♠8.087×106	93.6 d	β+
447	168Tm	69	99	7000843631600000000♠8.436316	7006804400000000000♠8.044×106	93.1 d	β+, β−
448	149Eu	63	86	7000858439500000000♠8.584395	7006804400000000000♠8.044×106	93.1 d	β+
449	97mTc	43	54		7006786200000000000♠7.862×106	91 d	IT
450	35S	16	19	7000889551000000000♠8.895510	7006756100000000000♠7.561×106	87.51 d	β−	CG
451	83Rb	37	46	7000902403799999999♠9.024038	7006744800000000000♠7.448×106	86.2 d	β+
452	46Sc	21	25	7000897909100000000♠8.979091	7006723900000000000♠7.239×106	83.78 d	β−
453	88Zr	40	48	7000902158900000000♠9.021589	7006720600000000000♠7.206×106	83.4 d	β+
454	73As	33	40	7000904334100000000♠9.043341	7006693800000000000♠6.938×106	80.3 d	β+
455	56Co	27	29	7000907203100000000♠9.072031	7006667300000000000♠6.673×106	77.23 d	β+
456	185W	74	111	7000830586600000000♠8.305866	7006648900000000000♠6.489×106	75.1 d	β−
457	192Ir	77	115		7006637900000000000♠6.379×106	73.827 d	β−,ε	IM
458	160Tb	65	95	7000849534600000000♠8.495346	7006624700000000000♠6.247×106	72.3 d	β−
459	58Co	27	31	7000910315300000000♠9.103153	7006612200000000000♠6.122×106	70.86 d	β+
460	183Re	75	108	7000832166100000000♠8.321661	7006604800000000000♠6.048×106	70 d	β+
461	175Hf	72	103	7000838266499999999♠8.382665	7006604800000000000♠6.048×106	70 d	β+
462	188W	74	114	7000827700300000000♠8.277003	7006602900000000000♠6.029×106	69.78 d	β−
463	85Sr	38	47	7000902548000000000♠9.025480	7006560200000000000♠5.602×106	64.84 d	β+
464	95Zr	40	55	7000897298900000000♠8.972989	7006553200000000000♠5.532×106	64.03 d	β−	FP
465	95mTc	43	52	7000897635900000000♠8.976359	7006527000000000000♠5.270×106	61 d	β+, IT
466	91mNb	41	50		7006525800000000000♠5.258×106	60.86 d	IT,ε
467	254Cf	98	156	7000775108700000000♠7.751087	7006522700000000000♠5.227×106	60.5 d	SF, α
468	124Sb	51	73	7000877794300000000♠8.777943	7006519400000000000♠5.194×106	60.12 d	β−
469	125I	53	72	7000878201900000000♠8.782019	7006513200000000000♠5.132×106	59.4 d	β+	IM
470	91Y	39	52	7000902017400000000♠9.020174	7006505500000000000♠5.055×106	58.51 d	β−	FP
471	125mTe	52	73		7006495900000000000♠4.959×106	57.4 d	IT
472	148Eu	63	85	7000858688199999999♠8.586882	7006470900000000000♠4.709×106	54.5 d	β+, α
473	7Be	4	3	7000581847000000000♠5.818470	7006459800000000000♠4.598×106	53.22 d	β+	CG
474	258Md	101	157	7000771594800000000♠7.715948	7006445000000000000♠4.450×106	51.5 d	α, SF
475	89Sr	38	51	7000903996899999999♠9.039969	7006436900000000000♠4.369×106	50.57 d	β−	FP, IM
476	114mIn	49	65	7000884660800000000♠8.846608	7006427800000000000♠4.278×106	49.51 d	IT, β+
477	146Gd	64	82	7000859251199999999♠8.592512	7006417100000000000♠4.171×106	48.28 d	β+
478	203Hg	80	123	7000819580599999999♠8.195806	7006402600000000000♠4.026×106	46.6 d	β−
479	237Pu	94	143	7000788106000000000♠7.881060	7006390500000000000♠3.905×106	45.2 d	β+, α
480	115mCd	48	67	7000883575400000000♠8.835754	7006385000000000000♠3.850×106	44.56 d	β−
481	59Fe	26	33	7000909951600000000♠9.099516	7006384400000000000♠3.844×106	44.49 d	β−	IM
482	181Hf	72	109	7000833327199999999♠8.333272	7006366200000000000♠3.662×106	42.38 d	β−
483	148mPm	61	87	7000858980000000000♠8.589800	7006356700000000000♠3.567×106	41.28 d	β−, IT
484	105Ag	47	58	7000890054700000000♠8.900547	7006356700000000000♠3.567×106	41.28 d	β+
485	255Es	99	156	7000774156700000000♠7.741567	7006343900000000000♠3.439×106	39.8 d	β−, α, SF
486	103Ru	44	59	7000891850000000000♠8.918500	7006339200000000000♠3.392×106	39.26 d	β−	FP
487	127Xe	54	73	7000876676800000000♠8.766768	7006314500000000000♠3.145×106	36.4 d	β+
488	184Re	75	109		7006305900000000000♠3.059×106	35.4 d	β+
489	95Nb	41	54	7000898482100000000♠8.984821	7006302300000000000♠3.023×106	34.99 d	β−	FP
490	37Ar	18	19	7000890775200000000♠8.907752	7006302000000000000♠3.020×106	34.95 d	β+	CG
491	129mTe	52	77	7000874495300000000♠8.744953	7006290300000000000♠2.903×106	33.6 d	IT, β−
492	84Rb	37	47	7000902073200000000♠9.020732	7006286000000000000♠2.860×106	33.1 d	β+, β−
493	241Cm	96	145	7000784849200000000♠7.848492	7006283400000000000♠2.834×106	32.8 d	β+, α
494	141Ce	58	83	7000867728600000000♠8.677286	7006280900000000000♠2.809×106	32.51 d	β−	FP
495	169Yb	70	99	7000842854600000000♠8.428546	7006276700000000000♠2.767×106	32.03 d	β+	IM
496	260Md	101	159	7000769978900000000♠7.699789	7006274800000000000♠2.748×106	31.81 d	SF, α, β+, β−
497	51Cr	24	27	7000908012699999999♠9.080127	7006239300000000000♠2.393×106	27.7 d	β+	IM
498	240Cm	96	144	7000785580500000000♠7.855805	7006233300000000000♠2.333×106	27 d	α, β+, SF
499	233Pa	91	142	7000791042600000000♠7.910426	7006233100000000000♠2.331×106	26.98 d	β−
500	82Sr	38	44	7000899825399999999♠8.998254	7006220800000000000♠2.208×106	25.56 d	β+	IM
501	33P	15	18	7000886943400000000♠8.869434	7006218900000000000♠2.189×106	25.34 d	β−
502	179m2Hf	72	107		7006216400000000000♠2.164×106	25.05 d	IT
503	234Th	90	144	7000789776300000000♠7.897763	7006208199999999999♠2.082×106	24.1 d	β−	DP
504	147Eu	63	84	7000859887900000000♠8.598879	7006208199999999999♠2.082×106	24.1 d	β+, α
505	178W	74	104	7000835456300000000♠8.354563	7006186600000000000♠1.866×106	21.6 d	β+
506	230U	92	138	7000793387100000000♠7.933871	7006179700000000000♠1.797×106	20.8 d	α, SF
507	253Es	99	154	7000775901900000000♠7.759019	7006176900000000000♠1.769×106	20.5 d	α, SF
508	121Te	52	69		7006165600000000000♠1.656×106	19.2 d	ε
509	227Th	90	137	7000795764400000000♠7.957644	7006161400000000000♠1.614×106	18.7 d	α	DP
510	86Rb	37	49	7000903350200000000♠9.033502	7006161100000000000♠1.611×106	18.6 d	β−, β+
511	253Cf	98	155	7000775788500000000♠7.757885	7006153900000000000♠1.539×106	17.8 d	β−, α
512	74As	33	41	7000902889500000000♠9.028895	7006153500000000000♠1.535×106	17.8 d	β+, β−
513	230Pa	91	139	7000793143600000000♠7.931436	7006150300000000000♠1.503×106	17.4 d	β+, β−, α
514	103Pd	46	57	7000892063800000000♠8.920638	7006146800000000000♠1.468×106	17.0 d	β+	IM
515	99Rh	45	54	7000893571100000000♠8.935711	7006139100000000000♠1.391×106	16.1 d	β+
516	48V	23	25	7000899789000000000♠8.997890	7006138000000000000♠1.380×106	15.97 d	β+
517	191Os	76	115	7000826187000000000♠8.261870	7006133100000000000♠1.331×106	15.41 d	β−
518	205Bi	83	122	7000817406899999999♠8.174069	7006132300000000000♠1.323×106	15.31 d	β+
519	156Eu	63	93	7000852064200000000♠8.520642	7006131200000000000♠1.312×106	15.19 d	β−
520	225Ra	88	137	7000797357600000000♠7.973576	7006128700000000000♠1.287×106	14.9 d	β−
521	32P	15	17	7000883086499999999♠8.830865	7006123200000000000♠1.232×106	14.26 d	β−	CG, IM
522	117mSn	50	67		7006121000000000000♠1.21×106	14 d	IT
523	143Pr	59	84	7000865225800000000♠8.652258	7006117200000000000♠1.172×106	13.56 d	β−
524	189Ir	77	112	7000827478299999999♠8.274783	7006114000000000000♠1.140×106	13.19 d	β+
525	136Cs	55	81	7000870617100000000♠8.706171	7006112700000000000♠1.127×106	13.04 d	β−
526	126I	53	73	7000876902600000000♠8.769026	7006111700000000000♠1.117×106	12.93 d	β+, β−
527	140Ba	56	84	7000866612000000000♠8.666120	7006110200000000000♠1.102×106	12.75 d	β−	FP
528	126Sb	51	75	7000875704200000000♠8.757042	7006106700000000000♠1.067×106	12.35 d	β−
529	202Tl	81	121	7000819995600000000♠8.199956	7006105700000000000♠1.057×106	12.23 d	β+
530	131mXe	54	77		7006102299999999999♠1.023×106	11.84 d	IT
531	190Ir	77	113	7000826475499999999♠8.264755	7006101800000000000♠1.018×106	11.78 d	β+
532	131Ba	56	75	7000873303700000000♠8.733037	7005993600000000000♠9.936×105	11.5 d	β+
533	223Ra	88	135	7000799404200000000♠7.994042	7005987600000000000♠9.876×105	11.43 d	α	DP, IM
534	71Ge	32	39	7000905594299999999♠9.055943	7005987600000000000♠9.876×105	11.43 d	β+
535	147Nd	60	87	7000860297300000000♠8.602973	7005948700000000000♠9.487×105	10.98 d	β−
536	246Pu	94	152	7000780549400000000♠7.805494	7005936600000000000♠9.366×105	10.84 d	β−
537	193mIr	77	116		7005909800000000000♠9.098×105	10.53 d	IT
538	188Pt	78	110	7000827251399999999♠8.272514	7005881300000000000♠8.813×105	10.2 d	β+, α
539	92mNb	41	51		7005877000000000000♠8.770×105	10.15 d	β+, α
540	225Ac	89	136	7000797515900000000♠7.975159	7005857100000000000♠8.571×105	9.92 d	α	DP
541	131Cs	55	76	7000874354100000000♠8.743541	7005837100000000000♠8.371×105	9.69 d	β+	IM
542	125Sn	50	75	7000875851499999999♠8.758515	7005832900000000000♠8.329×105	9.64 d	β−
543	169Er	68	101	7000843185199999999♠8.431852	7005811500000000000♠8.115×105	9.39 d	β−	IM
544	149Gd	64	85	7000857557600000000♠8.575576	7005801800000000000♠8.018×105	9.28 d	β+, α
545	167Tm	69	98	7000844586600000000♠8.445866	7005799200000000000♠7.992×105	9.25 d	β+
546	129mXe	54	75		7005767200000000000♠7.672×105	8.88 d	IT
547	206Po	84	122	7000815959000000000♠8.159590	7005760300000000000♠7.603×105	8.80 d	β+, α
548	72Se	34	38	7000901430000000000♠9.014300	7005725800000000000♠7.258×105	8.40 d	β+
549	106mAg	47	59	7000889063900000000♠8.890639	7005715400000000000♠7.154×105	8.28 d	β+
550	171Lu	71	100	7000840953200000000♠8.409532	7005711900000000000♠7.119×105	8.24 d	β+
551	131I	53	78	7000873884200000000♠8.738842	7005693000000000000♠6.930×105	8.02 d	β−	FP, IM
552	257Es	99	158	7000772346800000000♠7.723468	7005665300000000000♠6.653×105	7.7 d	β−, SF
553	111Ag	47	64	7000886611100000000♠8.866111	7005643700000000000♠6.437×105	7.45 d	β−
554	161Tb	65	96	7000849038300000000♠8.490383	7005596700000000000♠5.967×105	6.91 d	β−
555	237U	92	145	7000787980000000000♠7.879800	7005583200000000000♠5.832×105	6.75 d	β−
556	172Lu	71	101	7000840121700000000♠8.401217	7005578900000000000♠5.789×105	6.70 d	β+	IM
557	177Lu	71	106		7005574300000000000♠5.743×105	6.65 d	β−
558	132Cs	55	77	7000873159899999999♠8.731599	7005559900000000000♠5.599×105	6.48 d	β+, β−
559	206Bi	83	123	7000816855100000000♠8.168551	7005539400000000000♠5.394×105	6.24 d	β+
560	196Au	79	117	7000823020500000000♠8.230205	7005532800000000000♠5.328×105	5.17 d	β+, β−
561	56Ni	28	28	7000903389900000000♠9.033899	7005524900000000000♠5.249×105	6.08 d	β+
562	118Te	52	66	7000881472600000000♠8.814726	7005518400000000000♠5.184×105	6 d	β+
563	145Eu	63	82	7000860924500000000♠8.609245	7005512399999999999♠5.124×105	5.93 d	β+
564	120mSb	51	69	7000880819400000000♠8.808194	7005497700000000000♠4.977×105	5.76 d	β+
565	52Mn	25	27	7000904643100000000♠9.046431	7005483100000000000♠4.831×105	5.59 d	β+
566	148Pm	61	87		7005463800000000000♠4.638×105	5.37 d	β−
567	156Tb	65	91	7000852066700000000♠8.520667	7005462200000000000♠4.622×105	5.35 d	β+
568	155Tb	65	90	7000853103100000000♠8.531031	7005459600000000000♠4.596×105	5.32 d	β+
569	133Xe	54	79	7000873030200000000♠8.730302	7005453000000000000♠4.530×105	5.24 d	β−	IM
570	183Ta	73	110	7000831884700000000♠8.318847	7005440599999999999♠4.406×105	5.10 d	β−
571	210Bi	83	127		7005433000000000000♠4.330×105	5.01 d	β−, α	DP
572	245Bk	97	148	7000781902000000000♠7.819020	7005426800000000000♠4.268×105	4.94 d	β+, α
573	119mTe	52	67	7000880177300000000♠8.801773	7005406100000000000♠4.061×105	4.7 d	β+, IT
574	146Eu	63	83	7000859956000000000♠8.599560	7005398300000000000♠3.983×105	4.61 d	β+
575	47Ca	20	27	7000897218100000000♠8.972181	7005391900000000000♠3.919×105	4.54 d	β−
576	234Np	93	141	7000790057100000000♠7.900571	7005380200000000000♠3.802×105	4.4 d	β+
577	101mRh	45	56		7005374000000000000♠3.74×105	4.34 d	ε, IT
578	193mPt	78	115		7005374000000000000♠3.74×105	4.33 d	IT
579	96Tc	43	53	7000896525500000000♠8.965255	7005369800000000000♠3.698×105	4.28 d	β+
580	231U	92	139	7000792497700000000♠7.924977	7005362900000000000♠3.629×105	4.2 d	β+, α
581	175Yb	70	105	7000838390200000000♠8.383902	7005361600000000000♠3.616×105	4.19 d	β−
582	124I	53	71	7000877588400000000♠8.775884	7005360800000000000♠3.608×105	4.18 d	β+	IM
583	195mPt	78	117		7005346000000000000♠3.46×105	4.01 d	IT
584	127Sb	51	76	7000875400499999999♠8.754005	7005332600000000000♠3.326×105	3.85 d	β−
585	222Rn	86	136	7000799757300000000♠7.997573	7005330400000000000♠3.304×105	3.82 d	α	DP
586	186Re	75	111		7005321000000000000♠3.21×105	3.72 d	β−,e	IM
587	224Ra	88	136	7000798727700000000♠7.987277	7005313800000000000♠3.138×105	3.63 d	α	DP
588	100Pd	46	54	7000892358700000000♠8.923587	7005313600000000000♠3.136×105	3.63 d	β+
589	95mNb	41	54		7005311000000000000♠3.11×105	3.61 d	IT, β−
590	166Dy	66	100	7000844837600000000♠8.448376	7005293800000000000♠2.938×105	3.4 d	β−
591	140Nd	60	80	7000867311300000000♠8.673113	7005291200000000000♠2.912×105	3.37 d	β+
592	47Sc	21	26	7000901456400000000♠9.014564	7005289400000000000♠2.894×105	3.35 d	β−
593	87Y	39	48	7000902556500000000♠9.025565	7005287300000000000♠2.873×105	3.33 d	β+
594	89Zr	40	49	7000902491200000000♠9.024912	7005282300000000000♠2.823×105	3.27 d	β+
595	67Ga	31	36	7000906953200000000♠9.069532	7005281900000000000♠2.819×105	3.26 d	β+	IM
596	132Te	52	80	7000871664600000000♠8.716646	7005276800000000000♠2.768×105	3.2 d	β−	FP
597	134Ce	58	76	7000870443200000000♠8.704432	7005273000000000000♠2.730×105	3.16 d	β+
598	199Au	79	120	7000821753400000000♠8.217534	7005271200000000000♠2.712×105	3.14 d	β−
599	201Tl	81	120	7000820656100000000♠8.206561	7005262500000000000♠2.625×105	3.04 d	β+	IM
600	253Fm	100	153	7000775769100000000♠7.757691	7005259200000000000♠2.592×105	3. d	β+, α
601	191Pt	78	113	7000825822800000000♠8.258228	7005247300000000000♠2.473×105	2.86 d	β+
602	111In	49	62	7000886768799999999♠8.867688	7005242300000000000♠2.423×105	2.8 d	β+	IM
603	97Ru	44	53	7000895908000000000♠8.959080	7005241100000000000♠2.411×105	2.79 d	β+
604	99Mo	42	57	7000893966900000000♠8.939669	7005237500000000000♠2.375×105	2.75 d	β−	FP, IM
605	122Sb	51	71	7000879534600000000♠8.795346	7005235300000000000♠2.353×105	2.72 d	β−, β+
606	71As	33	38	7000902758100000000♠9.027581	7005235000000000000♠2.350×105	2.72 d	β+
607	198Au	79	119	7000822073200000000♠8.220732	7005232900000000000♠2.329×105	2.7 d	β−	IM
608	197Hg	80	117	7000822635800000000♠8.226358	7005230900000000000♠2.309×105	2.67 d	β+
609	90Y	39	51	7000903229400000000♠9.032294	7005230600000000000♠2.306×105	2.67 d	β−	IM
610	182Re	75	107	7000832105299999999♠8.321053	7005230399999999999♠2.304×105	2.67 d	β+
611	172Tm	69	103	7000840493200000000♠8.404932	7005229000000000000♠2.290×105	2.65 d	β−
612	67Cu	29	38	7000907608600000000♠9.076086	7005222600000000000♠2.226×105	2.58 d	β−	IM
613	44mSc	21	23	7000892462699999999♠8.924627	7005211000000000000♠2.110×105	2.44 d	IT, β+
614	128Ba	56	72	7000873852300000000♠8.738523	7005210000000000000♠2.100×105	2.43 d	β+
615	77Br	35	42	7000902243099999999♠9.022431	7005205300000000000♠2.053×105	2.38 d	β+
616	166Yb	70	96	7000844234000000000♠8.442340	7005204100000000000♠2.041×105	2.36 d	β+
617	177Ta	73	104	7000836355300000000♠8.363553	7005203600000000000♠2.036×105	2.36 d	β+
618	239Np	93	146	7000786499900000000♠7.864999	7005203600000000000♠2.036×105	2.36 d	β−	DP
619	153Tb	65	88	7000853747100000000♠8.537471	7005202199999999999♠2.022×105	2.34 d	β+
620	66Ni	28	38	7000907142299999999♠9.071423	7005196600000000000♠1.966×105	2.28 d	β−
621	247Pu	94	153	7000779197500000000♠7.791975	7005196100000000000♠1.961×105	2.27 d	β−
622	198m2Au	79	119		7005196000000000000♠1.96×105	2.27 d	IT
623	115Cd	48	67		7005192000000000000♠1.92×105	2.23 d	β−
624	149Pm	61	88	7000858187100000000♠8.581871	7005191100000000000♠1.911×105	2.21 d	β−
625	133mXe	54	79		7005189000000000000♠1.89×105	2.20 d	IT
626	203Pb	82	121	7000819343100000000♠8.193431	7005186900000000000♠1.869×105	2.16 d	β+
627	238Np	93	145	7000787193100000000♠7.871931	7005182900000000000♠1.829×105	2.12 d	β−
628	240Am	95	145	7000785669400000000♠7.856694	7005182900000000000♠1.829×105	2.12 d	β+, α
629	172Er	68	104	7000839975200000000♠8.399752	7005177500000000000♠1.775×105	2.05 d	β−
630	170Lu	71	99	7000840844500000000♠8.408445	7005173800000000000♠1.738×105	2.01 d	β+
631	72Zn	30	42	7000901759100000000♠9.017591	7005167400000000000♠1.674×105	1.94 d	β−
632	153Sm	62	91	7000854561400000000♠8.545614	7005166600000000000♠1.666×105	1.93 d	β−	IM
633	202Pt	78	124	7000818320900000000♠8.183209	7005158400000000000♠1.584×105	1.83 d	β−
634	48Sc	21	27	7000899832700000000♠8.998327	7005157200000000000♠1.572×105	1.82 d	β−
635	246Bk	97	149	7000781128700000000♠7.811287	7005155500000000000♠1.555×105	1.8 d	β+, α
636	195mHg	80	115	7000822939900000000♠8.229399	7005149800000000000♠1.498×105	1.73 d	IT, β+
637	188Ir	77	111	7000827520000000000♠8.275200	7005149400000000000♠1.494×105	1.73 d	β+
638	140La	57	83	7000867362000000000♠8.673620	7005145000000000000♠1.450×105	1.68 d	β−
639	254mEs	99	155		7005141000000000000♠1.41×105	1.64 d	β−, IT, α, EC, SF
640	69Ge	32	37	7000904379999999999♠9.043800	7005140600000000000♠1.406×105	1.63 d	β+
641	133mBa	56	77		7005140000000000000♠1.4×105	1.62 d	IT,e
642	77As	33	44	7000903128300000000♠9.031283	7005139800000000000♠1.398×105	1.62 d	β−
643	119Sb	51	68	7000882323500000000♠8.823235	7005137500000000000♠1.375×105	1.59 d	β+
644	147Gd	64	83	7000858400100000000♠8.584001	7005137000000000000♠1.370×105	1.59 d	β+
645	194Au	79	115	7000823762600000000♠8.237626	7005136900000000000♠1.369×105	1.58 d	β+
646	229Pa	91	138	7000794076900000000♠7.940769	7005129600000000000♠1.296×105	1.5 d	β+, α
647	246Cf	98	148	7000781079200000000♠7.810792	7005128499999999999♠1.285×105	1.49 d	α, β+, SF
648	57Ni	28	29	7000905522200000000♠9.055222	7005128200000000000♠1.282×105	1.48 d	β+
649	105Rh	45	60	7000890795600000000♠8.907956	7005127299999999999♠1.273×105	1.47 d	β−	FP
650	82Br	35	47	7000901640699999999♠9.016407	7005127000000000000♠1.270×105	1.47 d	β−
651	79Kr	36	43	7000901364399999999♠9.013644	7005126099999999999♠1.261×105	1.46 d	β+
652	137mCe	58	79	7000869632700000000♠8.696327	7005123800000000000♠1.238×105	1.43 d	IT, β+
653	169Lu	71	98	7000841497800000000♠8.414978	7005122600000000000♠1.226×105	1.42 d	β+
654	143Ce	58	85	7000864204100000000♠8.642041	7005118900000000000♠1.189×105	1.38 d	β−
655	251Es	99	152	7000777446700000000♠7.774467	7005118800000000000♠1.188×105	1.38 d	β+, α
656	83Sr	38	45	7000899656800000000♠8.996568	7005116700000000000♠1.167×105	1.35 d	β+
657	129Cs	55	74	7000874962200000000♠8.749622	7005115399999999999♠1.154×105	1.34 d	β+
658	268Db	105	163	7000763513300000000♠7.635133	7005115199999999999♠1.152×105	1.33 d	SF, EC
659	232Pa	91	141	7000791637900000000♠7.916379	7005113199999999999♠1.132×105	1.31 d	β−, β+
660	193Os	76	117	7000824434800000000♠8.244348	7005108400000000000♠1.084×105	1.25 d	β−
661	165Tm	69	96	7000845275799999999♠8.452758	7005108200000000000♠1.082×105	1.25 d	β+
662	131mTe	52	79	7000872039200000000♠8.720392	7005108000000000000♠1.080×105	1.25 d	β−, IT
663	226Ac	89	137	7000796376100000000♠7.963761	7005105700000000000♠1.057×105	1.22 d	β−, β+, α
664	160Er	68	92	7000848419000000000♠8.484190	7005102899999999999♠1.029×105	1.19 d	β+
665	151Pm	61	90	7000855738700000000♠8.557387	7005102200000000000♠1.022×105	1.18 d	β−
666	135mBa	56	79		7005101000000000000♠1.01×105	1.17 d	IT
667	121Sn	50	71		7004973000000000000♠9.73×104	1.13 d	β−
668	166Ho	67	99		7004965000000000000♠9.65×104	1.12 d	β−	IM
669	76As	33	43	7000902250500000000♠9.022505	7004945400000000000♠9.454×104	1.09 d	β−
670	200Tl	81	119	7000820656700000000♠8.206567	7004939600000000000♠9.396×104	1.09 d	β+
671	72As	33	39	7000901896600000000♠9.018966	7004936000000000000♠9.360×104	1.08 d	β+
672	231Th	90	141	7000792493200000000♠7.924932	7004918700000000000♠9.187×104	1.06 d	β−, α	DP
673	252Fm	100	152	7000776649800000000♠7.766498	7004914000000000000♠9.140×104	1.06 d	α, SF
674	252Cm	96	156	7000775743900000000♠7.757439	7004899000000000000♠8.99×104	[5]1.04 d	β−
675	156mTb	65	91		7004878000000000000♠8.78×104	1.02 d	IT
676	189Re	75	114	7000827226900000000♠8.272269	7004874800000000000♠8.748×104	1.01 d	β−

Radionuclides with half-lives of 1 hour to 24 hours

no	nuclide	Z	N	energy	half-life (s)	half-life (h)	decay mode	notes
677	197mHg	80	117		7004856800000000000♠8.568×104	23.8	IT
678	187W	74	113	7000828472200000000♠8.284722	7004853900000000000♠8.539×104	23.7	β−
679	248mBk	97	151		7004853200000000000♠8.532×104	23.7	β−, EC (30)
680	173Hf	72	101	7000839161700000000♠8.391617	7004849600000000000♠8.496×104	23.6	β+
681	96Nb	41	55	7000896303600000000♠8.963036	7004840600000000000♠8.406×104	23.4	β−
682	154m2Tb	65	89	7000852691200000000♠8.526912	7004817200000000000♠8.172×104	22.7	β+, IT (1.8)
683	236mNp	93	143		7004810000000000000♠8.1×104	22.5	EC, β− (50)
684	43K	19	24	7000892232699999999♠8.922327	7004802800000000000♠8.028×104	22.3	β−
685	182Os	76	106	7000831643200000000♠8.316432	7004795600000000000♠7.956×104	22.1	β+
686	228Pa	91	137	7000794446800000000♠7.944468	7004792000000000000♠7.920×104	22.0	β+, α (2)
687	48Cr	24	24	7000896339000000000♠8.963390	7004776200000000000♠7.762×104	21.6	β+
688	154Tb	65	89		7004774000000000000♠7.74×104	21.5	β+, β− (<0.1)
689	200Pb	82	118	7000820254199999999♠8.202542	7004774000000000000♠7.740×104	21.5	β+
690	112Pd	46	66	7000884218500000000♠8.842185	7004757100000000000♠7.571×104	21.0	β−
691	28Mg	12	16	7000860770600000000♠8.607706	7004752900000000000♠7.529×104	20.9	β−	CG
692	100Rh	45	55	7000892716700000000♠8.927167	7004748800000000000♠7.488×104	20.8	β+
693	133I	53	80	7000871709400000000♠8.717094	7004748800000000000♠7.488×104	20.8	β−
694	122Xe	54	68	7000877095900000000♠8.770959	7004723600000000000♠7.236×104	20.1	β+
695	255Fm	100	155	7000774270400000000♠7.742704	7004722500000000000♠7.225×104	20.1	α, SF (tr)
696	95Tc	43	52		7004720000000000000♠7.2×104	20.0	β+
697	181Re	75	106	7000832829400000000♠8.328294	7004716400000000000♠7.164×104	19.9	β+
698	197Pt	78	119	7000822575600000000♠8.225756	7004716100000000000♠7.161×104	19.9	β−
699	135La	57	78	7000871317900000000♠8.713179	7004702000000000000♠7.020×104	19.5	β+
700	194Ir	77	117		7004694100000000000♠6.941×104	19.3	β−
701	142Pr	59	83	7000866141700000000♠8.661417	7004688300000000000♠6.883×104	19.1	β−,EC (tr)
702	200mAu	79	121	7000820287700000000♠8.202877	7004673200000000000♠6.732×104	18.7	β−, IT (18)
703	159Gd	64	95	7000850257600000000♠8.502576	7004665200000000000♠6.652×104	18.5	β−
704	135Ce	58	77	7000869817900000000♠8.698179	7004637200000000000♠6.372×104	17.7	β+
705	193Au	79	114	7000824435300000000♠8.244353	7004635400000000000♠6.354×104	17.7	β+
706	151Tb	65	86	7000854569200000000♠8.545692	7004633900000000000♠6.339×104	17.6	β+, α (tr)
707	55Co	27	28	7000905364700000000♠9.053647	7004631100000000000♠6.311×104	17.5	β+
708	152Tb	65	87	7000853659100000000♠8.536591	7004630000000000000♠6.300×104	17.5	β+, α (tr)
709	188Re	75	113	7000827886000000000♠8.278860	7004612100000000000♠6.121×104	17.0	β−	IM
710	125Xe	54	71	7000876886400000000♠8.768864	7004608399999999999♠6.084×104	16.9	β+
711	97Zr	40	57	7000892645100000000♠8.926451	7004602799999999999♠6.028×104	16.7	β−
712	186Ir	77	109	7000828193500000000♠8.281935	7004599000000000000♠5.990×104	16.6	β+
713	86Zr	40	46	7000897597900000000♠8.975979	7004594000000000000♠5.940×104	16.5	β+
714	76Br	35	41	7000899618300000000♠8.996183	7004583200000000000♠5.832×104	16.2	β+
715	119Te	52	67		7004577799999999999♠5.778×104	16.1	EC, e+ (2.1)
716	242Am	95	147		7004576700000000000♠5.767×104	16.0	β−, EC (17)
717	170Hf	72	98	7000840221000000000♠8.402210	7004576400000000000♠5.764×104	16.0	β+
718	157Eu	63	94	7000851379200000000♠8.513792	7004546500000000000♠5.465×104	15.2	β−
719	24Na	11	13	7000842208200000000♠8.422082	7004538200000000000♠5.382×104	15.0	β−	CG, IM
720	76Kr	36	40	7000897940600000000♠8.979406	7004532800000000000♠5.328×104	14.8	β+
721	86Y	39	47	7000899323399999999♠8.993234	7004530600000000000♠5.306×104	14.7	β+
722	211Rn	86	125	7000811282500000000♠8.112825	7004525600000000000♠5.256×104	14.6	β+, α (27)
723	90Nb	41	49	7000898972700000000♠8.989727	7004525600000000000♠5.256×104	14.6	β+
724	185Ir	77	108	7000828938200000000♠8.289382	7004518400000000000♠5.184×104	14.4	β+
725	240U	92	148	7000785168200000000♠7.851682	7004507599999999999♠5.076×104	14.1	β−
726	72Ga	31	41	7000902395800000000♠9.023958	7004507400000000000♠5.074×104	14.1	β−
727	69mZn	30	39	7000905653600000000♠9.056536	7004495400000000000♠4.954×104	13.8	IT, β− (tr)
728	109Pd	46	63	7000887506100000000♠8.875061	7004493200000000000♠4.932×104	13.7	β−
729	87mY	39	48		7004481300000000000♠4.813×104	13.4	IT, β+ (1.6)
730	123I	53	70	7000878631100000000♠8.786311	7004476000000000000♠4.760×104	13.2	β+	IM
731	191mOs	76	115		7004471600000000000♠4.716×104	13.1	IT
732	183Os	76	107	7000830990700000000♠8.309907	7004468000000000000♠4.680×104	13.0	β+
733	150mEu	63	87		7004460800000000000♠4.608×104	12.8	β−, β+(11)
734	64Cu	29	35	7000909358100000000♠9.093581	7004457200000000000♠4.572×104	12.7	β+, β− (38)	IM
735	182mRe	75	107		7004457200000000000♠4.572×104	12.7	β+
736	200Pt	78	122	7000820434200000000♠8.204342	7004450000000000000♠4.500×104	12.5	β−
737	130I	53	77	7000874003500000000♠8.740035	7004445000000000000♠4.450×104	12.4	β−
738	42K	19	23	7000890517500000000♠8.905175	7004443600000000000♠4.436×104	12.3	β−	IM
739	171Hf	72	99	7000839547999999999♠8.395480	7004435600000000000♠4.356×104	12.1	β+
740	239Am	95	144	7000786466600000000♠7.864666	7004428400000000000♠4.284×104	11.9	β+, α (0.01)
741	193mHg	80	113	7000823148300000000♠8.231483	7004424800000000000♠4.248×104	11.8	β+, IT (7.2)
742	203Bi	83	120	7000817743600000000♠8.177436	7004423400000000000♠4.234×104	11.8	β+
743	77Ge	32	45	7000899618500000000♠8.996185	7004406799999999999♠4.068×104	11.3	β−
744	204Bi	83	121	7000817265100000000♠8.172651	7004403900000000000♠4.039×104	11.2	β+
745	189Pt	78	111	7000826435900000000♠8.264359	7004391300000000000♠3.913×104	10.9	β+
746	212Pb	82	130	7000810692800000000♠8.106928	7004383000000000000♠3.830×104	10.6	β−	DP, IM
747	195Hg	80	115		7004379100000000000♠3.791×104	10.5	β+
748	175Ta	73	102	7000837081300000000♠8.370813	7004378000000000000♠3.780×104	10.5	β+
749	245Pu	94	151	7000781375200000000♠7.813752	7004378000000000000♠3.780×104	10.5	β−
750	187Ir	77	110	7000828371300000000♠8.283713	7004378000000000000♠3.780×104	10.5	β+
751	165Er	68	97	7000846240600000000♠8.462406	7004373000000000000♠3.730×104	10.4	β+
752	93Y	39	54	7000897695100000000♠8.976951	7004366500000000000♠3.665×104	10.2	β−
753	244Am	95	149	7000782591400000000♠7.825914	7004363600000000000♠3.636×104	10.1	β−
754	266Lr	103	163		7004360000000000000♠3.600×104	10.0	SF
755	154m1Tb	65	89		7004359800000000000♠3.598×104	9.99	β+, IT(22)
756	183mOs	76	107		7004356400000000000♠3.564×104	9.90	β+, IT(15)
757	155Dy	66	89	7000851752100000000♠8.517521	7004356400000000000♠3.564×104	9.90	β+
758	91Sr	38	53	7000899050300000000♠8.990503	7004346700000000000♠3.467×104	9.63	β−
759	196m2Au	79	117		7004345600000000000♠3.456×104	9.60	IT
760	66Ga	31	35	7000903684299999999♠9.036843	7004341600000000000♠3.416×104	9.49	β+
761	156Sm	62	94	7000851600700000000♠8.516007	7004338400000000000♠3.384×104	9.40	β−
762	127Te	52	75		7004336600000000000♠3.366×104	9.35	β−
763	201Pb	82	119	7000819698900000000♠8.196989	7004335900000000000♠3.359×104	9.33	β+
764	152mEu	63	89		7004335200000000000♠3.352×104	9.31	β−, β+(28)
765	62Zn	30	32	7000905795700000000♠9.057957	7004330700000000000♠3.307×104	9.19	β+
766	135Xe	54	81	7000871145300000000♠8.711453	7004329000000000000♠3.290×104	9.14	β−
767	58mCo	27	31		7004327599999999999♠3.276×104	9.10	IT
768	128Sb	51	77	7000873234300000000♠8.732343	7004324400000000000♠3.244×104	9.01	β−
769	137Ce	58	79		7004324000000000000♠3.24×104	9.00	β+
770	234Pu	94	140	7000789889200000000♠7.898892	7004316800000000000♠3.168×104	8.80	β+, α (~6)
771	184Ta	73	111	7000830415400000000♠8.304154	7004313200000000000♠3.132×104	8.70	β−
772	250Es	99	151	7000777840700000000♠7.778407	7004309600000000000♠3.096×104	8.60	β+, α (<3)
773	101Pd	46	55	7000891714900000000♠8.917149	7004304900000000000♠3.049×104	8.47	β+
774	52Fe	26	26	7000900078899999999♠9.000789	7004297900000000000♠2.979×104	8.28	β+
775	173Tm	69	104	7000839652400000000♠8.396524	7004296600000000000♠2.966×104	8.24	β−
776	180Ta	73	107		7004293500000000000♠2.935×104	8.15	EC, β− (14)
777	157Dy	66	91	7000851354400000000♠8.513544	7004293000000000000♠2.930×104	8.14	β+
778	210At	85	125	7000812833700000000♠8.128337	7004291600000000000♠2.916×104	8.10	β+, α (0.2)
779	176Ta	73	103	7000836320199999999♠8.363202	7004291200000000000♠2.912×104	8.09	β+
780	166Tm	69	97	7000844418300000000♠8.444183	7004277199999999999♠2.772×104	7.70	β+
781	256mEs	99	157	7000773074200000000♠7.730742	7004273600000000000♠2.736×104	7.60	β−
782	171Er	68	103	7000840890100000000♠8.408901	7004270600000000000♠2.706×104	7.52	β−
783	199Tl	81	118	7000821233299999999♠8.212333	7004267100000000000♠2.671×104	7.42	β+
784	211At	85	126	7000812652700000000♠8.126527	7004259700000000000♠2.597×104	7.21	β+, α (42)
785	73Se	34	39	7000900582099999999♠9.005821	7004257400000000000♠2.574×104	7.15	β+
786	93mMo	42	51		7004246600000000000♠2.466×104	6.85	IT, β+ (0.1)
787	234Pa	91	143	7000789893000000000♠7.898930	7004241200000000000♠2.412×104	6.70	β−	DP
788	135I	53	82	7000869199399999999♠8.691994	7004236500000000000♠2.365×104	6.57	β−
789	107Cd	48	59	7000888427100000000♠8.884271	7004234000000000000♠2.340×104	6.50	β+
790	82mRb	37	45	7000899960800000000♠8.999608	7004233000000000000♠2.330×104	6.47	β+, IT (<0.3)
791	153Dy	66	87	7000852328800000000♠8.523288	7004230400000000000♠2.304×104	6.40	β+, α (tr)
792	127Cs	55	72	7000875038299999999♠8.750383	7004225000000000000♠2.250×104	6.25	β+
793	228Ac	89	139	7000794459100000000♠7.944591	7004221400000000000♠2.214×104	6.15	β−	DP
794	99mTc	43	56		7004216200000000000♠2.162×104	6.01	IT, β− (tr)	IM
795	145Pr	59	86	7000862051400000000♠8.620514	7004215400000000000♠2.154×104	5.98	β−
796	189mOs	76	113		7004209200000000000♠2.092×104	5.81	IT
797	207Po	84	123	7000815415800000000♠8.154158	7004208800000000000♠2.088×104	5.80	β+, α (0.02)
798	90Mo	42	48	7000896207199999999♠8.962072	7004200199999999999♠2.002×104	5.56	β+
799	257Md	101	156	7000772504000000000♠7.725040	7004198700000000000♠1.987×104	5.52	EC, α (15), SF (tr)
800	111mPd	46	65	7000884458899999999♠8.844589	7004198000000000000♠1.980×104	5.50	IT, β− (27)
801	139mNd	60	79	7000865952899999999♠8.659529	7004198000000000000♠1.980×104	5.50	β+, IT (12)
802	180mHf	72	108		7004196900000000000♠1.969×104	5.47	IT, β− (0.3)
803	209At	85	124	7000813295400000000♠8.132954	7004194800000000000♠1.948×104	5.41	β+, α (4.1)
804	113Ag	47	66	7000884153100000000♠8.841531	7004193300000000000♠1.933×104	5.37	β−
805	156m2Tb	65	91		7004190800000000000♠1.908×104	5.30	IT (?), β+ (?)
806	198Tl	81	117	7000821016599999999♠8.210166	7004190800000000000♠1.908×104	5.30	β+
807	251Fm	100	151	7000776859000000000♠7.768590	7004190800000000000♠1.908×104	5.30	β+, α (1.8)
808	138Nd	60	78	7000866566100000000♠8.665661	7004181400000000000♠1.814×104	5.04	β+
809	160mHo	67	93	7000848587700000000♠8.485877	7004180700000000000♠1.807×104	5.02	IT, β+ (27)
810	118mSb	51	67	7000881496300000000♠8.814963	7004180000000000000♠1.800×104	5.00	β+
811	243Pu	94	149	7000783364800000000♠7.833648	7004178400000000000♠1.784×104	4.96	β−
812	192Au	79	113	7000824203600000000♠8.242036	7004177800000000000♠1.778×104	4.94	β+
813	110In	49	61	7000885746400000000♠8.857464	7004176400000000000♠1.764×104	4.90	β+
814	133mCe	58	75	7000869077100000000♠8.690771	7004176400000000000♠1.764×104	4.90	β+
815	94Tc	43	51	7000896658300000000♠8.966583	7004175800000000000♠1.758×104	4.88	β+
816	85mY	39	46	7000898687999999999♠8.986880	7004175000000000000♠1.750×104	4.86	β+, IT (tr)
817	73Ga	31	42	7000902611200000000♠9.026112	7004175000000000000♠1.750×104	4.86	β−
818	192Hg	80	112	7000823805100000000♠8.238051	7004174600000000000♠1.746×104	4.85	β+
819	132La	57	75	7000870572100000000♠8.705721	7004172800000000000♠1.728×104	4.80	β+
820	99mRh	45	54		7004169200000000000♠1.692×104	4.70	β+, IT (<0.16)
821	267Db	105	162	7000764436100000000♠7.644361	7004165600000000000♠1.656×104	4.60	SF
822	179Lu	71	108	7000834542800000000♠8.345428	7004165200000000000♠1.652×104	4.59	β−
823	81Rb	37	44	7000900287100000000♠9.002871	7004164500000000000♠1.645×104	4.57	β+	IM
824	243Bk	97	146	7000782980100000000♠7.829801	7004162000000000000♠1.620×104	4.50	β+, α (~0.15)
825	115mIn	49	66		7004161500000000000♠1.615×104	4.49	IT, β− (5.0)
826	85mKr	36	49		7004161300000000000♠1.613×104	4.48	β−, IT (21)
827	105Ru	44	61	7000888968900000000♠8.889689	7004159800000000000♠1.598×104	4.44	β−
828	80mBr	35	45	7000901887200000000♠9.018872	7004159100000000000♠1.591×104	4.42	IT
829	139Pr	59	80	7000868156500000000♠8.681565	7004158800000000000♠1.588×104	4.41	β+
830	129Sb	51	78	7000872735800000000♠8.727358	7004158400000000000♠1.584×104	4.40	β−
831	244Bk	97	147	7000782249100000000♠7.822491	7004156600000000000♠1.566×104	4.35	β+, α (tr)
832	109In	49	60	7000886480500000000♠8.864805	7004151200000000000♠1.512×104	4.20	β+
833	184Hf	72	112	7000829687100000000♠8.296871	7004148300000000000♠1.483×104	4.12	β−
834	149Tb	65	84	7000855116600000000♠8.551166	7004148200000000000♠1.482×104	4.12	β+, α (17)
835	110Sn	50	60	7000885172700000000♠8.851727	7004148000000000000♠1.480×104	4.11	β+
836	44Sc	21	23		7004142900000000000♠1.429×104	3.97	β+
837	71mZn	30	41	7000901737000000000♠9.017370	7004142600000000000♠1.426×104	3.96	β−, IT (tr)
838	141La	57	84	7000865954000000000♠8.659540	7004141100000000000♠1.411×104	3.92	β−
839	133La	57	76	7000871410900000000♠8.714109	7004140800000000000♠1.408×104	3.91	β+
840	43Sc	21	22	7000891290700000000♠8.912907	7004140100000000000♠1.401×104	3.89	β+
841	195mIr	77	118	7000823332600000000♠8.233326	7004136800000000000♠1.368×104	3.80	β−, IT (5)
842	193Hg	80	113		7004136800000000000♠1.368×104	3.80	β+
843	176mLu	71	105		7004131900000000000♠1.319×104	3.66	β−, EC (0.1)
844	262Lr	103	159	7000768155600000000♠7.681556	7004129600000000000♠1.296×104	3.60	SF, β+, α
845	202mPb	82	120		7004127400000000000♠1.274×104	3.54	IT, β+ (9.5)
846	92Y	39	53	7000899320799999999♠8.993208	7004127400000000000♠1.274×104	3.54	β−
847	204Po	84	120	7000816119999999999♠8.161200	7004127099999999999♠1.271×104	3.53	β+, α (0.7)
848	132Ce	58	74	7000869613100000000♠8.696131	7004126400000000000♠1.264×104	3.51	β+
849	150Tb	65	85	7000854539400000000♠8.545394	7004125299999999999♠1.253×104	3.48	β+, α (tr)
850	117mCd	48	69	7000880884000000000♠8.808840	7004121000000000000♠1.210×104	3.36	β−
851	61Cu	29	32	7000908745200000000♠9.087452	7004120000000000000♠1.200×104	3.33	β+
852	209Pb	82	127	7000815560700000000♠8.155607	7004117100000000000♠1.171×104	3.25	β−
853	254Fm	100	154	7000775280800000000♠7.752808	7004116600000000000♠1.166×104	3.24	α, SF (0.06)
854	250Bk	97	153	7000777952300000000♠7.779523	7004115600000000000♠1.156×104	3.21	β−
855	161Er	68	93	7000847635200000000♠8.476352	7004115600000000000♠1.156×104	3.21	β+
856	190mRe	75	115	7000825743300000000♠8.257433	7004115200000000000♠1.152×104	3.20	β− (54), IT
857	90mY	39	51		7004114800000000000♠1.148×104	3.19	IT, β− (tr)
858	191Au	79	112	7000824834300000000♠8.248343	7004114500000000000♠1.145×104	3.18	β+
859	173Ta	73	100	7000837421800000000♠8.374218	7004112999999999999♠1.130×104	3.14	β+
860	112Ag	47	65	7000884475600000000♠8.844756	7004112700000000000♠1.127×104	3.13	β−
861	247Cf	98	149	7000780356600000000♠7.803566	7004112000000000000♠1.120×104	3.11	β+, α (0.04)
862	184Ir	77	107	7000828659900000000♠8.286599	7004111200000000000♠1.112×104	3.09	β+
863	190m3Ir	77	113		7004111100000000000♠1.111×104	3.09	β+, IT (8.6)
864	45Ti	22	23	7000893812100000000♠8.938121	7004110900000000000♠1.109×104	3.08	β+
865	167Ho	67	100	7000844430400000000♠8.444304	7004108100000000000♠1.081×104	3.00	β−
866	134Sm	62	72		7004104800000000000♠1.048×104	2.91	IT
867	239Cm	96	143	7000785714300000000♠7.857143	7004104400000000000♠1.044×104	2.90	β+, α (tr)
868	197Tl	81	116	7000821519000000000♠8.215190	7004102200000000000♠1.022×104	2.84	β+
869	88Kr	36	52	7000897691800000000♠8.976918	7004102200000000000♠1.022×104	2.84	β−
870	38S	16	22	7000877819600000000♠8.778196	7004102200000000000♠1.022×104	2.84	β−
871	87mSr	38	49		7004101299999999999♠1.013×104	2.82	IT, EC (0.3)
872	117Sb	51	66	7000882897700000000♠8.828977	7004100800000000000♠1.008×104	2.80	β+
873	224Ac	89	135	7000798099300000000♠7.980993	7004100099999999999♠1.001×104	2.78	β+, α (9.4), β−(<1.6)
874	93Tc	43	50	7000897027400000000♠8.970274	7003990000000000000♠9.900×103	2.75	β+
875	85Y	39	46		7003964800000000000♠9.648×103	2.68	β+
876	150Pm	61	89	7000856201400000000♠8.562014	7003964800000000000♠9.648×103	2.68	β−
877	92Sr	38	54	7000897206699999999♠8.972067	7003957600000000000♠9.576×103	2.66	β−
878	256Fm	100	156	7000773739800000000♠7.737398	7003945600000000000♠9.456×103	2.63	SF, α (8.1)
879	31Si	14	17	7000881161799999999♠8.811618	7003943800000000000♠9.438×103	2.62	β−	CG
880	56Mn	25	31	7000908757200000000♠9.087572	7003928400000000000♠9.284×103	2.58	β−
881	65Ni	28	37	7000907326700000000♠9.073267	7003906200000000000♠9.062×103	2.52	β−
882	195Ir	77	118		7003900000000000000♠9×103	2.50	β−
883	176W	74	102	7000835905500000000♠8.359055	7003900000000000000♠9.000×103	2.50	β+
884	117Cd	48	69		7003896400000000000♠8.964×103	2.49	β−
885	116Te	52	64	7000880641400000000♠8.806414	7003896400000000000♠8.964×103	2.49	β+
886	141Nd	60	81	7000866847600000000♠8.668476	7003896400000000000♠8.964×103	2.49	β+
887	161Ho	67	94	7000848873700000000♠8.488737	7003892800000000000♠8.928×103	2.48	β+
888	210Rn	86	124	7000811703200000000♠8.117032	7003864000000000000♠8.640×103	2.40	α (96), β+
889	198Pb	82	116	7000820289300000000♠8.202893	7003864000000000000♠8.640×103	2.40	β+
890	238Cm	96	142	7000786376400000000♠7.863764	7003864000000000000♠8.640×103	2.40	β+, α
891	83Br	35	48	7000902324300000000♠9.023243	7003864000000000000♠8.640×103	2.40	β−
892	152Dy	66	86	7000853267000000000♠8.532670	7003856800000000000♠8.568×103	2.38	β+, α (0.1)	IM
893	178mTa	73	105	7000835507499999999♠8.355075	7003849600000000000♠8.496×103	2.36	β+
894	187Pt	78	109	7000826763800000000♠8.267638	7003846000000000000♠8.460×103	2.35	β+
895	165Dy	66	99	7000845689100000000♠8.456891	7003840200000000000♠8.402×103	2.33	β−
896	267Rf	104	163	7000764735700000000♠7.647357	7003828000000000000♠8.280×103	2.30	SF
897	132I	53	79	7000872057000000000♠8.720570	7003826200000000000♠8.262×103	2.30	β−
898	158Er	68	90	7000848461900000000♠8.484619	7003824400000000000♠8.244×103	2.29	β+
899	66Ge	32	34	7000900496399999999♠9.004964	7003813599999999999♠8.136×103	2.26	β+
900	129Ba	56	73	7000873074600000000♠8.730746	7003802800000000000♠8.028×103	2.23	β+
901	150Sm	62	88		7003799200000000000♠7.992×103	2.22	β+, α (tr?)
902	177W	74	103	7000835211800000000♠8.352118	7003792000000000000♠7.920×103	2.20	β+
903	106mRh	45	61	7000888476099999999♠8.884761	7003786000000000000♠7.860×103	2.18	β−
904	129mBa	56	73		7003777600000000000♠7.776×103	2.16	β+, IT (tr?)
905	138mPr	59	79	7000867108799999999♠8.671088	7003763200000000000♠7.632×103	2.12	β+
906	121I	53	68	7000878444300000000♠8.784443	7003763200000000000♠7.632×103	2.12	β+
907	127Sn	50	77	7000872880000000000♠8.728800	7003756000000000000♠7.560×103	2.10	β−
908	123Xe	54	69	7000876440900000000♠8.764409	7003748800000000000♠7.488×103	2.08	β+
909	186Pt	78	108	7000827489699999999♠8.274897	7003748800000000000♠7.488×103	2.08	β+, α (tr)
910	245Am	95	150	7000781867400000000♠7.818674	7003738000000000000♠7.380×103	2.05	β−
911	89Nb	41	48	7000897750699999999♠8.977507	7003730800000000000♠7.308×103	2.03	β+
912	195mOs	76	119		7003720000000000000♠7.2×103	2.00	β−, IT (?)
913	117mIn	49	68	7000882884900000000♠8.828849	7003697200000000000♠6.972×103	1.94	β−, IT (47)
914	186mIr	77	109		7003691200000000000♠6.912×103	1.92	β+, IT (~25)
915	177Yb	70	107	7000835940100000000♠8.359401	7003688000000000000♠6.880×103	1.91	β−
916	198mTl	81	117		7003673200000000000♠6.732×103	1.87	β+, IT (44)
917	196Tl	81	115	7000821161800000000♠8.211618	7003662400000000000♠6.624×103	1.84	β+
918	83m2Kr	36	47		7003658800000000000♠6.588×103	1.83	IT
919	18F	9	9	7000802278900000000♠8.022789	7003658500000000000♠6.585×103	1.83	β+	CG,IM
920	41Ar	18	23	7000887785200000000♠8.877852	7003657700000000000♠6.577×103	1.83	β−	CG
921	163Tm	69	94	7000845620500000000♠8.456205	7003651600000000000♠6.516×103	1.81	β+
922	239Pa	91	148	7000784814800000000♠7.848148	7003648000000000000♠6.480×103	1.80	β−
923	201Bi	83	118	7000817787500000000♠8.177875	7003648000000000000♠6.480×103	1.80	β+, α
924	207At	85	122	7000813530300000000♠8.135303	7003648000000000000♠6.480×103	1.80	β+, α (~10)
925	224Rn	86	138	7000797132700000000♠7.971327	7003642000000000000♠6.420×103	1.78	β−
926	80Sr	38	42	7000895017700000000♠8.950177	7003637800000000000♠6.378×103	1.77	β+
927	181Os	76	105	7000831193500000000♠8.311935	7003630000000000000♠6.300×103	1.75	β+
928	205Po	84	121	7000815673700000000♠8.156737	7003626400000000000♠6.264×103	1.74	β+, α (0.04)
929	149Nd	60	89	7000857052900000000♠8.570529	7003622100000000000♠6.221×103	1.73	β−
930	202Bi	83	119	7000817396600000000♠8.173966	7003619200000000000♠6.192×103	1.72	β+, α (tr)
931	249Es	99	150	7000778546400000000♠7.785464	7003613200000000000♠6.132×103	1.70	β+~, α (0.6)
932	147Tb	65	82	7000855263400000000♠8.552634	7003612000000000000♠6.120×103	1.70	β+
933	87Zr	40	47	7000898337300000000♠8.983373	7003604800000000000♠6.048×103	1.68	β+
934	126Ba	56	70	7000872743900000000♠8.727439	7003600000000000000♠6.000×103	1.67	β+
935	113mIn	49	64		7003596800000000000♠5.968×103	1.66	IT
936	61Co	27	34	7000910244900000000♠9.102449	7003594000000000000♠5.940×103	1.65	β−
937	95Ru	44	51	7000894974900000000♠8.949749	7003591500000000000♠5.915×103	1.64	β+
938	238Am	95	143	7000786788200000000♠7.867882	7003588000000000000♠5.880×103	1.63	β+,α (tr)
939	208At	85	123	7000813137600000000♠8.131376	7003586800000000000♠5.868×103	1.63	β+, α (0.6)
940	133Ce	58	75		7003582000000000000♠5.82×103	1.62	β+
941	75Br	35	40	7000899318100000000♠8.993181	7003580200000000000♠5.802×103	1.61	β+
942	152m5Eu	63	89		7003576000000000000♠5.76×103	1.60	IT
943	259Md	101	158	7000770986000000000♠7.709860	7003576000000000000♠5.760×103	1.60	SF, α (<1.3)
944	197mPt	78	119		7003572500000000000♠5.725×103	1.59	IT, β− (3.3)
945	230Ra	88	142	7000792124900000000♠7.921249	7003558000000000000♠5.580×103	1.55	β−
946	142La	57	85	7000863495400000000♠8.634954	7003546600000000000♠5.466×103	1.52	β−
947	78As	33	45	7000900487900000000♠9.004879	7003544200000000000♠5.442×103	1.51	β−
948	199Pb	82	117	7000819811100000000♠8.198111	7003540000000000000♠5.400×103	1.50	β+
949	78Ge	32	46	7000899263500000000♠8.992635	7003528000000000000♠5.280×103	1.47	β−
950	255Cf	98	157	7000773873900000000♠7.738739	7003510000000000000♠5.100×103	1.42	β−
951	196mTl	81	115		7003507600000000000♠5.076×103	1.41	β+, IT (3.8)
952	196mIr	77	119	7000821944000000000♠8.219440	7003504000000000000♠5.040×103	1.40	β−, IT (<0.3)
953	132mI	53	79		7003499300000000000♠4.993×103	1.39	IT, β− (14)
954	139Ba	56	83	7000868221700000000♠8.682217	7003498400000000000♠4.984×103	1.38	β−
955	75Ge	32	43	7000902941300000000♠9.029413	7003496700000000000♠4.967×103	1.38	β−
956	120I	53	67	7000876957700000000♠8.769577	7003489600000000000♠4.896×103	1.36	β+
957	266Db	105	161		7003480000000000000♠4.8×103	1.33	α ?, SF ?, β+ ?
958	256Md	101	155	7000772906200000000♠7.729062	7003462000000000000♠4.620×103	1.28	β+, α (9.2), SF (<3)
959	137Pr	59	78	7000867845900000000♠8.678459	7003460800000000000♠4.608×103	1.28	β+
960	87Kr	36	51	7000899902200000000♠8.999022	7003457800000000000♠4.578×103	1.27	β−
961	164Yb	70	94	7000844341900000000♠8.443419	7003454800000000000♠4.548×103	1.26	β+
962	163Er	68	95	7000847116800000000♠8.471168	7003450000000000000♠4.500×103	1.25	β+
963	77Kr	36	41	7000898261800000000♠8.982618	7003446400000000000♠4.464×103	1.24	β+
964	178Yb	70	108	7000835052999999999♠8.350530	7003444000000000000♠4.440×103	1.23	β−
965	237Am	95	142	7000787483000000000♠7.874830	7003438000000000000♠4.380×103	1.22	β+,α (0.03)
966	142Sm	62	80	7000862761600000000♠8.627616	7003434900000000000♠4.349×103	1.21	β+
967	97Nb	41	56	7000895386400000000♠8.953864	7003432600000000000♠4.326×103	1.20	β−
968	185Pt	78	107	7000826959800000000♠8.269598	7003425400000000000♠4.254×103	1.18	β+
969	195Tl	81	114	7000821571200000000♠8.215712	7003417600000000000♠4.176×103	1.16	β+
970	129Te	52	77		7003417600000000000♠4.176×103	1.16	β−
971	104Ag	47	57	7000888970200000000♠8.889702	7003415200000000000♠4.152×103	1.15	β+
972	110mIn	49	61		7003414600000000000♠4.146×103	1.15	β+
973	174Ta	73	101	7000836868400000000♠8.368684	7003410400000000000♠4.104×103	1.14	β+
974	68Ga	31	37	7000905788800000000♠9.057888	7003406299999999999♠4.063×103	1.13	β+	IM
975	85mSr	38	47		7003405800000000000♠4.058×103	1.13	IT, β+ (13)
976	190mIr	77	113		7003403200000000000♠4.032×103	1.12	IT
977	162mHo	67	95	7000847837099999999♠8.478371	7003401999999999999♠4.020×103	1.12	IT, β+ (38)
978	204m2Pb	82	122		7003401600000000000♠4.016×103	1.12	IT
979	89mNb	41	48		7003396000000000000♠3.96×103	1.10	β+
980	103Ag	47	56	7000889454100000000♠8.894541	7003394200000000000♠3.942×103	1.10	β+
981	249Cm	96	153	7000778719100000000♠7.787191	7003384900000000000♠3.849×103	1.07	β−
982	183Hf	72	111	7000830788500000000♠8.307885	7003384100000000000♠3.841×103	1.07	β−
983	229Ac	89	140	7000793704800000000♠7.937048	7003376200000000000♠3.762×103	1.05	β−
984	117Te	52	65	7000879865200000000♠8.798652	7003372000000000000♠3.720×103	1.03	β+
985	240Np	93	147	7000785334800000000♠7.853348	7003371400000000000♠3.714×103	1.03	β−
986	182mHf	72	110		7003369000000000000♠3.69×103	1.03	β−, IT (46)
987	212Bi	83	129	7000810961700000000♠8.109617	7003363300000000000♠3.633×103	1.01	β−,α (36)	DP
988	116mSb	51	65	7000881648300000000♠8.816483	7003361800000000000♠3.618×103	1.01	β+
989	148Tb	65	83	7000854794899999999♠8.547949	7003360000000000000♠3.600×103	1.00	β+

Naturally occurring isotopes with half-lives below one hour

nuclide	half-life	decay mode
211Pb	36.1 min	β−
214Pb	26.8 min	β−
223Fr	22 min	β−, α
214Bi	19.9 min	β−, α
206Hg	8.15 min	β−
215Bi	7.6 min	β−
221Fr	4.8 min	α
207Tl	4.77 min	β−
206Tl	4.2 min	β−
218Po	3.10 min	α, β−
208Tl	3.053 min	β−
211Bi	2.14 min	α, β−
210Tl	1.3 min	β−
234mPa	1.17 min	β−, I
219At	56 s	α, β−
220Rn	55.6 s	α
285Cn	29 s	α
219Rn	3.96 s	α
218At	1.5 s	α, β−
211Po	0.516 s	α
216Po	0.145 s	α
218Rn	35 ms	α
215Po	1.781 ms	α
214Po	164.3 µs	α
215At	0.1 ms	α
212Po	299 ns	α

See also

• Primordial nuclide
• Table of nuclides
• Isotope geochemistry
• Radionuclide
• Mononuclidic element
• Monoisotopic element
• Stable isotope
• List of elements by stability of isotopes
• List of radioactive isotopes by half-life

Sources

Almost all data are taken from reference.^[6] For more recent updates, see reference.^[7] These sources do not indicate whether certain heavy isotopes starting from Lr, Rf, Db... (etc.) were produced, observed, or only predicted from estimated data.

References

External links

• Experimental atomic mass data compiled Nov. 2003
• J. Magill, G. Pfennig, J. Galy "Karlsruher Nuclide Chart", 7th edition 2006, revised printing Nov. 2007
• Nice Overview picture for energy of nuclides
• National Isotope Development Center Reference information on isotopes, and coordination and management of isotope production, availability, and distribution
• Isotope Development & Production for Research and Applications (IDPRA) U.S. Department of Energy program for isotope production and production research and development