Contents |
Element categories in the periodic table
Metals | Metalloids | Nonmetals | Unknown chemical properties |
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Alkali metals | Alkaline earth metals | Inner transition metals | Transition metals | Post-transition metals | Other nonmetals | Halogens | Noble gases | |||
Lanthanides | Actinides |
Z |
Sym |
Element |
Group |
Period |
Weight u () |
Density g / cm3 |
Melt K |
Boil K |
Heat J / g K |
Neg |
Abundance mg / kg |
---|---|---|---|---|---|---|---|---|---|---|---|
1 | H | Hydrogen | 1 | 1 | 1.00794(7)2 3 4 | 0.00008988 | 14.175 | 20.28 | 14.304 | 2.20 | 1400 |
2 | He | Helium | 18 | 1 | 4.002602(2)2 4 | 0.0001785 | 6 | 4.22 | 5.193 | - | 0.008 |
3 | Li | Lithium | 1 | 2 | 6.941(2)2 3 4 5 | 0.534 | 453.85 | 1615 | 3.582 | 0.98 | 20 |
4 | Be | Beryllium | 2 | 2 | 9.012182(3) | 1.85 | 1560.15 | 2742 | 1.825 | 1.57 | 2.8 |
5 | B | Boron | 13 | 2 | 10.811(7)2 3 4 | 2.34 | 2573.15 | 4200 | 1.026 | 2.04 | 10 |
6 | C | Carbon | 14 | 2 | 12.0107(8)2 4 | 2.267 | 3948.157 | 4300 | 0.709 | 2.55 | 200 |
7 | N | Nitrogen | 15 | 2 | 14.0067(2)2 4 | 0.0012506 | 63.29 | 77.36 | 1.04 | 3.04 | 19 |
8 | O | Oxygen | 16 | 2 | 15.9994(3)2 4 | 0.001429 | 50.5 | 90.20 | 0.918 | 3.44 | 461000 |
9 | F | Fluorine | 17 | 2 | 18.9984032(5) | 0.001696 | 53.63 | 85.03 | 0.824 | 3.98 | 585 |
10 | Ne | Neon | 18 | 2 | 20.1797(6)2 3 | 0.0008999 | 24.703 | 27.07 | 1.03 | – | 0.005 |
11 | Na | Sodium | 1 | 3 | 22.98976928(2) | 0.971 | 371.15 | 1156 | 1.228 | 0.93 | 23600 |
12 | Mg | Magnesium | 2 | 3 | 24.3050(6) | 1.738 | 923.15 | 1363 | 1.023 | 1.31 | 23300 |
13 | Al | Aluminium | 13 | 3 | 26.9815386(8) | 2.698 | 933.4 | 2792 | 0.897 | 1.61 | 82300 |
14 | Si | Silicon | 14 | 3 | 28.0855(3)4 | 2.3296 | 1683.15 | 3538 | 0.705 | 1.9 | 282000 |
15 | P | Phosphorus | 15 | 3 | 30.973762(2) | 1.82 | 317.25 | 553 | 0.769 | 2.19 | 1050 |
16 | S | Sulfur | 16 | 3 | 32.065(5)2 4 | 2.067 | 388.51 | 717.8 | 0.71 | 2.58 | 350 |
17 | Cl | Chlorine | 17 | 3 | 35.453(2)2 3 4 | 0.003214 | 172.31 | 239.11 | 0.479 | 3.16 | 145 |
18 | Ar | Argon | 18 | 3 | 39.948(1)2 4 | 0.0017837 | 83.96 | 87.30 | 0.52 | – | 3.5 |
19 | K | Potassium | 1 | 4 | 39.0983(1) | 0.862 | 336.5 | 1032 | 0.757 | 0.82 | 20900 |
20 | Ca | Calcium | 2 | 4 | 40.078(4)2 | 1.54 | 1112.15 | 1757 | 0.647 | 1 | 41500 |
21 | Sc | Scandium | 3 | 4 | 44.955912(6) | 2.989 | 1812.15 | 3109 | 0.568 | 1.36 | 22 |
22 | Ti | Titanium | 4 | 4 | 47.867(1) | 4.54 | 1933.15 | 3560 | 0.523 | 1.54 | 5650 |
23 | V | Vanadium | 5 | 4 | 50.9415(1) | 6.11 | 2175.15 | 3680 | 0.489 | 1.63 | 120 |
24 | Cr | Chromium | 6 | 4 | 51.9961(6) | 7.15 | 2130.15 | 2944 | 0.449 | 1.66 | 102 |
25 | Mn | Manganese | 7 | 4 | 54.938045(5) | 7.44 | 1519.15 | 2334 | 0.479 | 1.55 | 950 |
26 | Fe | Iron | 8 | 4 | 55.845(2) | 7.874 | 1808.15 | 3134 | 0.449 | 1.83 | 56300 |
27 | Co | Cobalt | 9 | 4 | 58.933195(5) | 8.86 | 1768.15 | 3200 | 0.421 | 1.88 | 25 |
28 | Ni | Nickel | 10 | 4 | 58.6934(4) | 8.912 | 1726.15 | 3186 | 0.444 | 1.91 | 84 |
29 | Cu | Copper | 11 | 4 | 63.546(3)4 | 8.96 | 1357.75 | 2835 | 0.385 | 1.9 | 60 |
30 | Zn | Zinc | 12 | 4 | 65.38(2) | 7.134 | 692.88 | 1180 | 0.388 | 1.65 | 70 |
31 | Ga | Gallium | 13 | 4 | 69.723(1) | 5.907 | 302.91 | 2477 | 0.371 | 1.81 | 19 |
32 | Ge | Germanium | 14 | 4 | 72.64(1) | 5.323 | 1211.45 | 3106 | 0.32 | 2.01 | 1.5 |
33 | As | Arsenic | 15 | 4 | 74.92160(2) | 5.776 | 1090.157 | 887 | 0.329 | 2.18 | 1.8 |
34 | Se | Selenium | 16 | 4 | 78.96(3)4 | 4.809 | 494.15 | 958 | 0.321 | 2.55 | 0.05 |
35 | Br | Bromine | 17 | 4 | 79.904(1) | 3.122 | 266.05 | 332.0 | 0.474 | 2.96 | 2.4 |
36 | Kr | Krypton | 18 | 4 | 83.798(2)2 3 | 0.003733 | 115.93 | 119.93 | 0.248 | 3 | <0.001 |
37 | Rb | Rubidium | 1 | 5 | 85.4678(3)2 | 1.532 | 312.79 | 961 | 0.363 | 0.82 | 90 |
38 | Sr | Strontium | 2 | 5 | 87.62(1)2 4 | 2.64 | 1042.15 | 1655 | 0.301 | 0.95 | 370 |
39 | Y | Yttrium | 3 | 5 | 88.90585(2) | 4.469 | 1799.15 | 3609 | 0.298 | 1.22 | 33 |
40 | Zr | Zirconium | 4 | 5 | 91.224(2)2 | 6.506 | 2125.15 | 4682 | 0.278 | 1.33 | 165 |
41 | Nb | Niobium | 5 | 5 | 92.90638(2) | 8.57 | 2741.15 | 5017 | 0.265 | 1.6 | 20 |
42 | Mo | Molybdenum | 6 | 5 | 95.96(2)2 | 10.22 | 2890.15 | 4912 | 0.251 | 2.16 | 1.2 |
43 | Tc | Technetium | 7 | 5 | [98]1 | 11.5 | 2473.15 | 5150 | – | 1.9 | <0.001 |
44 | Ru | Ruthenium | 8 | 5 | 101.07(2)2 | 12.37 | 2523.15 | 4423 | 0.238 | 2.2 | 0.001 |
45 | Rh | Rhodium | 9 | 5 | 102.90550(2) | 12.41 | 2239.15 | 3968 | 0.243 | 2.28 | 0.001 |
46 | Pd | Palladium | 10 | 5 | 106.42(1)2 | 12.02 | 1825.15 | 3236 | 0.244 | 2.2 | 0.015 |
47 | Ag | Silver | 11 | 5 | 107.8682(2)2 | 10.501 | 1234.15 | 2435 | 0.235 | 1.93 | 0.075 |
48 | Cd | Cadmium | 12 | 5 | 112.411(8)2 | 8.69 | 594.33 | 1040 | 0.232 | 1.69 | 0.159 |
49 | In | Indium | 13 | 5 | 114.818(3) | 7.31 | 429.91 | 2345 | 0.233 | 1.78 | 0.25 |
50 | Sn | Tin | 14 | 5 | 118.710(7)2 | 7.287 | 505.21 | 2875 | 0.228 | 1.96 | 2.3 |
51 | Sb | Antimony | 15 | 5 | 121.760(1)2 | 6.685 | 904.05 | 1860 | 0.207 | 2.05 | 0.2 |
52 | Te | Tellurium | 16 | 5 | 127.60(3)2 | 6.232 | 722.8 | 1261 | 0.202 | 2.1 | 0.001 |
53 | I | Iodine | 17 | 5 | 126.90447(3) | 4.93 | 386.65 | 457.4 | 0.214 | 2.66 | 0.45 |
54 | Xe | Xenon | 18 | 5 | 131.293(6)2 3 | 0.005887 | 161.45 | 165.03 | 0.158 | 2.6 | <0.001 |
55 | Cs | Caesium | 1 | 6 | 132.9054519(2) | 1.873 | 301.7 | 944 | 0.242 | 0.79 | 3 |
56 | Ba | Barium | 2 | 6 | 137.327(7) | 3.594 | 1002.15 | 2170 | 0.204 | 0.89 | 425 |
57 | La | Lanthanum | 6 | 138.90547(7)2 | 6.145 | 1193.15 | 3737 | 0.195 | 1.1 | 39 | |
58 | Ce | Cerium | 6 | 140.116(1)2 | 6.77 | 1071.15 | 3716 | 0.192 | 1.12 | 66.5 | |
59 | Pr | Praseodymium | 6 | 140.90765(2) | 6.773 | 1204.15 | 3793 | 0.193 | 1.13 | 9.2 | |
60 | Nd | Neodymium | 6 | 144.242(3)2 | 7.007 | 1289.15 | 3347 | 0.19 | 1.14 | 41.5 | |
61 | Pm | Promethium | 6 | [145]1 | 7.26 | 1204.15 | 3273 | – | – | <0.001 | |
62 | Sm | Samarium | 6 | 150.36(2)2 | 7.52 | 1345.15 | 2067 | 0.197 | 1.17 | 7.05 | |
63 | Eu | Europium | 6 | 151.964(1)2 | 5.243 | 1095.15 | 1802 | 0.182 | 1.2 | 2 | |
64 | Gd | Gadolinium | 6 | 157.25(3)2 | 7.895 | 1585.15 | 3546 | 0.236 | 1.2 | 6.2 | |
65 | Tb | Terbium | 6 | 158.92535(2) | 8.229 | 1630.15 | 3503 | 0.182 | 1.2 | 1.2 | |
66 | Dy | Dysprosium | 6 | 162.500(1)2 | 8.55 | 1680.15 | 2840 | 0.17 | 1.22 | 5.2 | |
67 | Ho | Holmium | 6 | 164.93032(2) | 8.795 | 1743.15 | 2993 | 0.165 | 1.23 | 1.3 | |
68 | Er | Erbium | 6 | 167.259(3)2 | 9.066 | 1795.15 | 3503 | 0.168 | 1.24 | 3.5 | |
69 | Tm | Thulium | 6 | 168.93421(2) | 9.321 | 1818.15 | 2223 | 0.16 | 1.25 | 0.52 | |
70 | Yb | Ytterbium | 6 | 173.054(5)2 | 6.965 | 1097.15 | 1469 | 0.155 | 1.1 | 3.2 | |
71 | Lu | Lutetium | 3 | 6 | 174.9668(1)2 | 9.84 | 1936.15 | 3675 | 0.154 | 1.27 | 0.8 |
72 | Hf | Hafnium | 4 | 6 | 178.49(2) | 13.31 | 2500.15 | 4876 | 0.144 | 1.3 | 3 |
73 | Ta | Tantalum | 5 | 6 | 180.94788(2) | 16.654 | 3269.15 | 5731 | 0.14 | 1.5 | 2 |
74 | W | Tungsten | 6 | 6 | 183.84(1) | 19.25 | 3680.15 | 5828 | 0.132 | 2.36 | 1.3 |
75 | Re | Rhenium | 7 | 6 | 186.207(1) | 21.02 | 3453.15 | 5869 | 0.137 | 1.9 | <0.001 |
76 | Os | Osmium | 8 | 6 | 190.23(3)2 | 22.61 | 3300.15 | 5285 | 0.13 | 2.2 | 0.002 |
77 | Ir | Iridium | 9 | 6 | 192.217(3) | 22.56 | 2716.15 | 4701 | 0.131 | 2.2 | 0.001 |
78 | Pt | Platinum | 10 | 6 | 195.084(9) | 21.46 | 2045.15 | 4098 | 0.133 | 2.28 | 0.005 |
79 | Au | Gold | 11 | 6 | 196.966569(4) | 19.282 | 1337.73 | 3129 | 0.129 | 2.54 | 0.004 |
80 | Hg | Mercury | 12 | 6 | 200.59(2) | 13.5336 | 234.43 | 630 | 0.14 | 2 | 0.085 |
81 | Tl | Thallium | 13 | 6 | 204.3833(2) | 11.85 | 577.15 | 1746 | 0.129 | 1.62 | 0.85 |
82 | Pb | Lead | 14 | 6 | 207.2(1)2 4 | 11.342 | 600.75 | 2022 | 0.129 | 2.33 | 14 |
83 | Bi | Bismuth | 15 | 6 | 208.98040(1) | 9.807 | 544.67 | 1837 | 0.122 | 2.02 | 0.009 |
84 | Po | Polonium | 16 | 6 | [210]1 | 9.32 | 527.15 | 1235 | – | 2 | <0.001 |
85 | At | Astatine | 17 | 6 | [210]1 | 7 | 575.15 | 610 | – | 2.2 | <0.001 |
86 | Rn | Radon | 18 | 6 | [222]1 | 0.00973 | 202.15 | 211.3 | 0.094 | – | <0.001 |
87 | Fr | Francium | 1 | 7 | [223]1 | 1.87 | 300.15 | 950 | – | 0.7 | <0.001 |
88 | Ra | Radium | 2 | 7 | [226]1 | 5.5 | 973.15 | 2010 | – | 0.9 | <0.001 |
89 | Ac | Actinium | 7 | [227]1 | 10.07 | 1323.15 | 3471 | 0.12 | 1.1 | <0.001 | |
90 | Th | Thorium | 7 | 232.03806(2)1 2 | 11.72 | 2028.15 | 5061 | 0.113 | 1.3 | 9.6 | |
91 | Pa | Protactinium | 7 | 231.03588(2)1 | 15.37 | 1873.15 | 4300 | – | 1.5 | <0.001 | |
92 | U | Uranium | 7 | 238.02891(3)1 | 18.95 | 1405.15 | 4404 | 0.116 | 1.38 | 2.7 | |
93 | Np | Neptunium | 7 | [237]1 | 20.45 | 913.15 | 4273 | – | 1.36 | <0.001 | |
94 | Pu | Plutonium | 7 | [244]1 | 19.84 | 913.15 | 3501 | – | 1.28 | <0.001 | |
95 | Am | Americium | 7 | [243]1 | 13.69 | 1267.15 | 2880 | – | 1.3 | 08 | |
96 | Cm | Curium | 7 | [247]1 | 13.51 | 1340.15 | 3383 | – | 1.3 | 0 | |
97 | Bk | Berkelium | 7 | [247]1 | 14.79 | 1259.15 | 983 | – | 1.3 | 0 | |
98 | Cf | Californium | 7 | [251]1 | 15.1 | 1925.15 | 1173 | – | 1.3 | 0 | |
99 | Es | Einsteinium | 7 | [252]1 | 13.5 | 1133.15 | – | – | 1.3 | 0 | |
100 | Fm | Fermium | 7 | [257]1 | – | – | – | 1.3 | 0 | ||
101 | Md | Mendelevium | 7 | [258]1 | – | – | – | 1.3 | 0 | ||
102 | No | Nobelium | 7 | [259]1 | – | – | – | 1.3 | 0 | ||
103 | Lr | Lawrencium | 3 | 7 | [262]1 | – | – | – | 1.3 | 0 | |
104 | Rf | Rutherfordium | 4 | 7 | [261]1 | 18.1 | – | – | – | 0 | |
105 | Db | Dubnium | 5 | 7 | [262]1 | 39 | - | – | – | 0 | |
106 | Sg | Seaborgium | 6 | 7 | [266]1 | 35 | - | – | – | 0 | |
107 | Bh | Bohrium | 7 | 7 | [264]1 | 37 | - | – | – | 0 | |
108 | Hs | Hassium | 8 | 7 | [267]1 | 41 | - | – | – | 0 | |
109 | Mt | Meitnerium | 9 | 7 | [268]1 | 35 | - | – | – | 0 | |
110 | Ds | Darmstadtium | 10 | 7 | [271]1 | – | – | – | – | 0 | |
111 | Rg | Roentgenium | 11 | 7 | [272]1 | – | – | – | – | <0.001 | |
112 | Cn | Copernicium | 12 | 7 | [285]1 | – | – | – | – | 0 | |
113 | Uut | Ununtrium | 13 | 7 | [284]1 | – | – | – | – | 0 | |
114 | Uuq | Ununquadium | 14 | 7 | [289]1 | – | – | – | – | 0 | |
115 | Uup | Ununpentium | 15 | 7 | [288]1 | – | – | – | – | 0 | |
116 | Uuh | Ununhexium | 16 | 7 | [292]1 | – | – | – | – | 0 | |
117 | Uus | Ununseptium | 17 | 7 | [294]1 | – | – | – | – | 0 | |
118 | Uuo | Ununoctium | 18 | 7 | [294]1 | – | – | – | – | 0 |
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