List of radioactive isotopes by half-life
This is a list of radioactive isotopes ordered by half-life from shortest to longest.
10−24 seconds
isotope |
half-life 10−24 seconds |
hydrogen-7 |
21 |
hydrogen-5 |
80 |
hydrogen-4 |
100 |
nitrogen-10 |
200 |
hydrogen-6 |
290 |
lithium-5 |
324 |
lithium-4 |
325 |
boron-7 |
350 |
helium-5 |
760 |
10−21 seconds
isotope |
half-life 10−21 seconds |
helium-10 |
1.52 |
lithium-10 |
2 |
carbon-8 |
2 |
helium-7 |
3.040 |
beryllium-6 |
5 |
helium-9 |
7 |
boron-9 |
800 |
10−18 seconds
isotope |
half-life 10−18 seconds |
beryllium-8 |
81.9 |
10−12 seconds
isotope |
half-life 10−12 seconds |
boron-16 |
190 |
beryllium-13 |
500 |
10−9 seconds
isotope |
half-life 10−9 seconds |
lithium-12 |
10 |
boron-18 |
26 |
carbon-21 |
30 |
beryllium-15 |
200 |
beryllium-16 |
200 |
polonium-212 |
299 |
10−6 seconds
isotope |
half-life 10−6 seconds |
Darmstadtium-267 |
3 |
Nobelium-250 |
5.7 |
Rutherfordium-254 |
23 |
Darmstadtium-270 |
160 |
Darmstadtium-273 |
170 |
Darmstadtium-269 |
230 |
Copernicium-277 |
240 |
Ununtrium-278 |
340 |
Fermium-258 |
370 |
Hassium-264 |
540 |
Fermium-241 |
730 |
Hassium-263 |
760 |
Fermium-242 |
800 |
Ununoctium-294 |
890 |
10−3 seconds
isotope |
half-life 10−3 seconds |
hassium-265 |
2 |
boron-19 |
2.92 |
meitnerium-266 |
3.4 |
boron-17 |
5.08 |
carbon-22 |
6.2 |
lithium-11 |
8.59 |
boron-15 |
9.87 |
boron-14 |
12.5 |
carbon-20 |
16 |
boron-13 |
17.33 |
boron-12 |
20.2 |
beryllium-12 |
21.49 |
carbon-19 |
46.2 |
carbon-18 |
92 |
bohrium-262 |
102 |
helium-8 |
119 |
carbon-9 |
126.5 |
lithium-9 |
178.3 |
carbon-17 |
193 |
carbon-16 |
747 |
boron-8 |
770 |
helium-6 |
806.7 |
lithium-8 |
839.9 |
100 seconds
isotope |
half-life seconds |
carbon-15 |
2.449 |
flerovium-289 |
2.6 |
beryllium-14 |
4.84 |
beryllium-11 |
13.81 |
carbon-10 |
19.29 |
dubnium-261 |
27 |
seaborgium-266 |
30 |
dubnium-262 |
34 |
|
minutes |
seconds |
rutherfordium-261 |
1.35 |
81 |
nobelium-253 |
1.62 |
97 |
103 seconds
isotope |
half-life |
minutes |
103 seconds |
carbon-11 | 20.334 |
1.2200 |
nobelium-259 | 58 |
3.5 |
|
hours |
103 seconds |
fluorine-18 | 1.8295 |
6.586 |
mendelevium-257 | 5.52 |
19.9 |
erbium-165 | 10.36 |
37.3 |
sodium-24 | 14.96 |
53.9 |
|
days |
103 seconds |
fermium-252 | 1.058 |
91.4 |
erbium-160 | 1.191 |
102.9 |
fermium-253 | 3 |
260 |
radon-222 | 3.8235 |
330.35 |
manganese-52 | 5.591 |
483.1 |
iodine-131 | 8.02 |
693 |
thulium-167 | 9.25 |
799 |
106 seconds
isotope |
half-life |
days |
106 seconds |
phosphorus-32 |
14.29 |
1.235 |
vanadium-48 |
15.9735 |
1.38011 |
californium-253 | 17.81 |
1.539 |
chromium-51 | 27.7025 |
2.39350 |
mendelevium-258 | 51.5 |
4.45 |
beryllium-7 | 53.12 |
4.590 |
californium-254 | 60.5 |
5.23 |
cobalt-56 | 77.27 |
6.676 |
scandium-46 | 83.79 |
7.239 |
sulfur-35 | 87.32 |
7.544 |
thulium-168 | 93.1 |
8.04 |
fermium-257 | 100.5 |
8.68 |
thulium-170 | 128.6 |
11.11 |
polonium-210 | 138 |
11.9 |
cobalt-57 | 271.79 |
23.483 |
vanadium-49 | 330 |
29 |
californium-248 | 333.5 |
28.81 |
|
years |
106 seconds |
ruthenium-106 | 1.023 |
32.3 |
neptunium-235 | 1.084 |
34.2 |
cadmium-109 | 1.267 |
40.0 |
thulium-171 | 1.92 |
61 |
caesium-134 | 2.0652 |
65.17 |
sodium-22 | 2.602 |
82.1 |
rhodium-101 | 3.3 |
100 |
cobalt-60 | 5.2714 |
166.35 |
hydrogen-3 | 12.32 |
389 |
californium-250 | 13.08 |
413 |
niobium meta state Nb-93m | 16.13 |
509 |
strontium-90 | 28.79 |
909 |
curium-243 | 29.1 |
920 |
caesium-137 | 30.17 |
952 |
109 seconds
isotope |
half-life |
years |
109 seconds |
titanium-44 | 63 |
2.0 |
uranium-232 | 68.9 |
2.17 |
plutonium-238 | 87.7 |
2.77 |
samarium-151 | 96.6 |
3.05 |
nickel-63 | 100.1 |
3.16 |
silicon-32 | 170 |
5.4 |
argon-39 | 269 |
8.5 |
californium-249 | 351 |
11.1 |
silver-108 | 418 |
13.2 |
americium-241 | 432.2 |
13.64 |
niobium-91 | 680 |
21 |
californium-251 | 898 |
28.3 |
holmium-166(m1) | 1,200 |
38 |
berkelium-247 | 1,380 |
44 |
radium-226 | 1,600 |
50 |
molybdenum-93 | 4,000 |
130 |
holmium-153 | 4,570 |
144 |
curium-246 | 4,730 |
149 |
carbon-14[1] | 5,730 |
181 |
plutonium-240 | 6,563 |
207.1 |
thorium-229 | 7,340 |
232 |
americium-243 | 7,370 |
233 |
curium-245 | 8,500 |
270 |
curium-250 | 9,000 |
280 |
niobium-94 | 20,300 |
640 |
plutonium-239 | 24,110 |
761 |
1012 seconds
isotope |
half-life |
103 years |
1012 seconds |
protactinium-231 | 32.76 |
1.034 |
lead-202 | 52.5 |
1.66 |
lanthanum-137 | 60 |
1.9 |
thorium-230 | 75.38 |
2.379 |
nickel-59 | 76 |
2.4 |
calcium-41 | 103 |
3.3 |
neptunium-236 | 154 |
4.9 |
uranium-233 | 159.2 |
5.02 |
rhenium-186(m) | 200 |
6.3 |
technetium-99 | 211.1 |
6.66 |
krypton-81 | 229 |
7.2 |
tin-126 | 230 |
7.3 |
uranium-234 | 245.5 |
7.75 |
chlorine-36 | 301 |
9.5 |
curium-248 | 340 |
11 |
bismuth-208 | 368 |
11.6 |
plutonium-242 | 272.3 |
8.59 |
aluminium-26 | 717 |
22.6 |
|
106 years |
1012 seconds |
selenium-79 | 1.13 |
36 |
iron-60 | 1.5 |
47 |
beryllium-10 | 1.36 |
43 |
zirconium-93 | 1.53 |
48 |
gadolinium-150 | 1.79 |
56 |
neptunium-237 | 2.144 |
67.7 |
caesium-135 | 2.3 |
73 |
technetium-97 | 2.6 |
82 |
dysprosium-154 | 3 |
95 |
bismuth-210(m) | 3.04 |
96 |
manganese-53 | 3.7 |
120 |
technetium-98 | 4.2 |
130 |
palladium-107 | 6.5 |
210 |
hafnium-182 | 9 |
280 |
lead-205 | 15.3 |
480 |
curium-247 | 15.6 |
490 |
iodine-129 | 15.7 |
500 |
uranium-236 | 23.42 |
739 |
1015 seconds
1018 seconds
isotope |
half-life |
109 years |
1018 seconds |
lutetium-176 | 38.5 |
1.21 |
rhenium-187 | 41.2 ± .2 |
1.3002 ± 0.0063 |
rubidium-87 | 49.23 |
1.554 |
lanthanum-138 | 102 |
3.2 |
samarium-147 | 106 |
3.3 |
platinum-190 | 650 ± 30 |
20.51 ± 0.95 |
1021 seconds
isotope |
half-life |
1012 years |
1021 seconds |
gadolinium-152 | 108 |
3.4 |
indium-115 | 441 |
13.9 |
|
1015 years |
1021 seconds |
tantalum-180m | 1.0 |
32 |
hafnium-174 | 2.0 |
63 |
osmium-186 | 2.0 |
63 |
neodymium-144 | 2.29 |
72 |
samarium-148 | 7 |
220 |
cadmium-113 | 7.7 |
240 |
1024 seconds
isotope |
half-life |
1015 years |
1024 seconds |
vanadium-50 | 140 ± 40 |
4.4 ± 1.3 |
|
1018 years |
1024 seconds |
tungsten-180 | 1.8 ± .2 |
56.8 ± 6.3 |
europium-151 | 5 |
160 |
neodymium-150 | 6.7 |
210 |
molybdenum-100 | 8.5 |
270 |
bismuth-209 | 19 ± 2 |
600 ± 63 |
zirconium-96 | 20 |
630 |
cadmium-116 | 31 ± 4 |
980 ± 130 |
1027 seconds
isotope |
half-life |
1018 years |
1027 seconds |
calcium-48 | 43 |
1.4 |
selenium-82 | 97 |
3.1 |
tellurium-130 | 790 |
25 |
|
1021 years |
1027 seconds |
barium-130 | 1.6 |
50 |
germanium-76 | 1.8 |
57 |
xenon-136 | 2.38 |
75 |
1030 seconds
isotope |
half-life |
1024 years |
1030 seconds |
tellurium-128 | 2.2 ± 0.3 |
69.4 ± 9.5 |
See also
Notes
External links
- Radioactive isotope table "lists ALL radioactive nuclei with a half-life greater than 1000 years", incorporated in the list above.