|
|
| Name | No. |
Atomic Weight |
Sym. |
Melting
Point ( °C ) |
Boiling
Point ( °C ) |
Density* (g/cm3) |
Earth
crust ( % )* |
Discovery (Year) |
Electron config. |
|---|---|---|---|---|---|---|---|---|---|
| Actinium | 89 | 227 | Ac | 1050 | 3200 | 10.07 | 1899 | [Rn] 6d1 7s2 | |
| Aluminum | 13 | 26.9815 | Al | 660 | 2467 | 2.7 | 8.07 | 1825 | [Ne] 3s2 3p1 |
| Americium | 95 | 243 | Am | 994 | 2607 | 13.67 | 1944 | [Rn] 5f7 7s2 | |
| Antimony | 51 | 121.76 | Sb | 630 | 1750 | 6.68 | ancient | [Kr] 4d10 5s2 5p3 | |
| Argon | 18 | 39.948 | Ar | -189 | -186 | 1894 | [Ne] 3s2 3p6 | ||
| Arsenic | 33 | 74.9216 | As | 81 | 613 | 5.72 | ancient | [Ar] 3d10 4s2 4p3 | |
| Astatine | 85 | 210 | At | 302 | 337 | 1940 | [Xe] 4f14 5d10 6s2 6p5 | ||
| Barium | 56 | 137.327 | Ba | 725 | 1140 | 3.59 | 0.05 | 1808 | [Xe] 6s2 |
| Berkelium | 97 | 247 | Bk | 986 | 14.78 | 1949 | |||
| Beryllium | 4 | 9.0122 | Be | 1278 | 2970 | 1.85 | 1797 | [He] 2s2 | |
| Bismuth | 83 | 208.9804 | Bi | 271 | 1560 | 9.75 | ancient | [Xe] 4f14 5d10 6s2 6p3 | |
| Bohrium | 107 | 264 | Bh | 1981 | |||||
| Boron | 5 | 10.811 | B | 2300 | 2550 | 2.34 | 1808 | [He] 2s2 2p1 | |
| Bromine | 35 | 79.904 | Br | -7 | 59 | 3.12 | 1826 | [Ar] 3d10 4s2 4p5 | |
| Cadmium | 48 | 112.411 | Cd | 321 | 765 | 8.65 | 1817 | [Kr] 4d10 5s2 | |
| Calcium | 20 | 40.078 | Ca | 839 | 1484 | 1.55 | 3.65 | 1808 | [Ar] 4s2 |
| Californium | 98 | 251 | Cf | 900 | 15.1 | 1950 | |||
| Carbon | 6 | 12.0107 | C | 3500 | 4827 | 2.26 | 0.094 | ancient | [He] 2s2 2p2 |
| Cerium | 58 | 140.116 | Ce | 795 | 3257 | 6.77 | 1803 | [Xe] 4f1 5d1 6s2 | |
| Cesium | 55 | 132.9055 | Cs | 29 | 678 | 1.87 | 1860 | [Xe] 6s1 | |
| Chlorine | 17 | 35.453 | Cl | -101 | -35 | 3.21 | 0.045 | 1774 | [Ne] 3s2 3p5 |
| Chromium | 24 | 51.9961 | Cr | 1857 | 2672 | 7.19 | 0.035 | 1797 | [Ar] 3d5 4s1 |
| Cobalt | 27 | 58.9332 | Co | 1495 | 2870 | 8.9 | 1735 | [Ar] 3d7 4s2 | |
| Copper | 29 | 63.546 | Cu | 1083 | 2567 | 8.96 | ancient | [Ar] 3d10 4s1 | |
| Curium | 96 | 247 | Cm | 1340 | 13.5 | 1944 | |||
| Dubnium | 105 | 262 | Db | 1967 | |||||
| Dysprosium | 66 | 162.5 | Dy | 1412 | 2562 | 8.55 | 1886 | [Xe] 4f10 6s2 | |
| Einsteinium | 99 | 252 | Es | 860 | 1952 | ||||
| Erbium | 68 | 167.259 | Er | 1522 | 2510 | 9.07 | 1842 | [Xe] 4f12 6s2 | |
| Europium | 63 | 151.964 | Eu | 822 | 1597 | 5.24 | 1901 | [Xe] 4f7 6s2 | |
| Fermium | 100 | 257 | Fm | 1527 | 1952 | ||||
| Fluorine | 9 | 18.9984 | F | -220 | -188 | 1.7 | 0.029 | 1886 | [He] 2s2 2p5 |
| Francium | 87 | 223 | Fr | 27 | 677 | 1939 | [Rn] 7s1 | ||
| Gadolinium | 64 | 157.25 | Gd | 1311 | 3233 | 7.9 | 1880 | [Xe] 4f7 5d1 6s2 | |
| Gallium | 31 | 69.723 | Ga | 30 | 2403 | 5.91 | 1875 | [Ar] 3d10 4s2 4p1 | |
| Germanium | 32 | 72.64 | Ge | 937 | 2830 | 5.32 | 1886 | [Ar] 3d10 4s2 4p2 | |
| Gold | 79 | 196.9665 | Au | 1064 | 2807 | 19.32 | ancient | [Xe] 4f14 5d10 6s1 | |
| Hafnium | 72 | 178.49 | Hf | 2150 | 5400 | 13.31 | 1923 | [Xe] 4f14 5d2 6s2 | |
| Hassium | 108 | 277 | Hs | 1984 | |||||
| Helium | 2 | 4.0026 | He | -272 | -269 | 1895 | 1s2 | ||
| Holmium | 67 | 164.9303 | Ho | 1470 | 2720 | 8.8 | 1867 | [Xe] 4f11 6s2 | |
| Hydrogen | 1 | 1.0079 | H | -259 | -253 | 0.09 | 0.14 | 1776 | 1s1 |
| Indium | 49 | 114.818 | In | 157 | 2000 | 7.31 | 1863 | [Kr] 4d10 5s2 5p1 | |
| Iodine | 53 | 126.9045 | I | 114 | 184 | 4.93 | 1811 | [Kr] 4d10 5s2 5p5 | |
| Iridium | 77 | 192.217 | Ir | 2410 | 4527 | 22.4 | 1803 | [Xe] 4f14 5d7 6s2 | |
| Iron | 26 | 55.845 | Fe | 1535 | 2750 | 7.87 | 5.05 | ancient | [Ar] 3d6 4s2 |
| Krypton | 36 | 83.8 | Kr | -157 | -153 | 1898 | [Ar] 3d10 4s2 4p6 | ||
| Lanthanum | 57 | 138.9055 | La | 920 | 3469 | 6.15 | 1839 | [Xe] 5d1 6s2 | |
| Lawrencium | 103 | 262 | Lr | 1627 | 1961 | ||||
| Lead | 82 | 207.2 | Pb | 327 | 1740 | 11.35 | ancient | [Xe] 4f14 5d10 6s2 6p2 | |
| Lithium | 3 | 6.941 | Li | 180 | 1347 | 0.53 | 1817 | [He] 2s1 | |
| Lutetium | 71 | 174.967 | Lu | 1656 | 3315 | 9.84 | 1907 | [Xe] 4f14 5d1 6s2 | |
| Magnesium | 12 | 24.305 | Mg | 639 | 1090 | 1.74 | 2.08 | 1755 | [Ne] 3s2 |
| Manganese | 25 | 54.938 | Mn | 1245 | 1962 | 7.43 | 0.09 | 1774 | [Ar] 3d5 4s2 |
| Meitnerium | 109 | 268 | Mt | 1982 | |||||
| Mendelevium | 101 | 258 | Md | 1955 | |||||
| Mercury | 80 | 200.59 | Hg | -39 | 357 | 13.55 | ancient | [Xe] 4f14 5d10 6s2 | |
| Molybdenum | 42 | 95.94 | Mo | 2617 | 4612 | 10.22 | 1781 | [Kr] 4d5 5s1 | |
| Neodymium | 60 | 144.24 | Nd | 1010 | 3127 | 7.01 | 1885 | [Xe] 4f4 6s2 | |
| Neon | 10 | 20.1797 | Ne | -249 | -246 | 1898 | [He] 2s2 2p6 | ||
| Neptunium | 93 | 237 | Np | 640 | 3902 | 20.2 | 1940 | [Rn] 5f4 6d1 7s2 | |
| Nickel | 28 | 58.6934 | Ni | 1453 | 2732 | 8.9 | 0.019 | 1751 | [Ar] 3d8 4s2 |
| Niobium | 41 | 92.9064 | Nb | 2468 | 4927 | 8.57 | 1801 | [Kr] 4d4 5s1 | |
| Nitrogen | 7 | 14.0067 | N | -210 | -196 | 1.25 | 1772 | [He] 2s2 2p3 | |
| Nobelium | 102 | 259 | No | 827 | 1958 | ||||
| Osmium | 76 | 190.23 | Os | 3045 | 5027 | 22.6 | 1803 | [Xe] 4f14 5d6 6s2 | |
| Oxygen | 8 | 15.9994 | O | -218 | -183 | 1.43 | 46.71 | 1774 | [He] 2s2 2p4 |
| Palladium | 46 | 106.42 | Pd | 1552 | 2927 | 12.02 | 1803 | [Kr] 4d10 | |
| Phosphorus | 15 | 30.9738 | P | 44 | 280 | 1.82 | 0.13 | 1669 | [Ne] 3s2 3p3 |
| Platinum | 78 | 195.078 | Pt | 1772 | 3827 | 21.45 | 1735 | [Xe] 4f14 5d9 6s1 | |
| Plutonium | 94 | 244 | Pu | 640 | 3235 | 19.84 | 1940 | [Rn] 5f6 7s2 | |
| Polonium | 84 | 209 | Po | 254 | 962 | 9.3 | 1898 | [Xe] 4f14 5d10 6s2 6p4 | |
| Potassium | 19 | 39.0983 | K | 64 | 774 | 0.86 | 2.58 | 1807 | [Ar] 4s1 |
| Praseodymium | 59 | 140.9077 | Pr | 935 | 3127 | 6.77 | 1885 | [Xe] 4f3 6s2 | |
| Promethium | 61 | 145 | Pm | 1100 | 3000 | 7.3 | 1945 | [Xe] 4f5 6s2 | |
| Protactinium | 91 | 231.0359 | Pa | 1568 | 15.4 | 1913 | [Rn] 5f2 6d1 7s2 | ||
| Radium | 88 | 226 | Ra | 700 | 1737 | 5.5 | 1898 | [Rn] 7s2 | |
| Radon | 86 | 222 | Rn | -71 | -62 | 1900 | [Xe] 4f14 5d10 6s2 6p6 | ||
| Rhenium | 75 | 186.207 | Re | 3180 | 5627 | 21.04 | 1925 | [Xe] 4f14 5d5 6s2 | |
| Rhodium | 45 | 102.9055 | Rh | 1966 | 3727 | 12.41 | 1803 | [Kr] 4d8 5s1 | |
| Rubidium | 37 | 85.4678 | Rb | 39 | 688 | 1.63 | 1861 | [Kr] 5s1 | |
| Ruthenium | 44 | 101.07 | Ru | 2250 | 3900 | 12.37 | 1844 | [Kr] 4d7 5s1 | |
| Rutherfordium | 104 | 261 | Rf | 1964 | |||||
| Samarium | 62 | 150.36 | Sm | 1072 | 1900 | 7.52 | 1879 | [Xe] 4f6 6s2 | |
| Scandium | 21 | 44.9559 | Sc | 1539 | 2832 | 2.99 | 1879 | [Ar] 3d1 4s2 | |
| Seaborgium | 106 | 266 | Sg | 1974 | |||||
| Selenium | 34 | 78.96 | Se | 217 | 685 | 4.79 | 1817 | [Ar] 3d10 4s2 4p4 | |
| Silicon | 14 | 28.0855 | Si | 1410 | 2355 | 2.33 | 27.69 | 1824 | [Ne] 3s2 3p2 |
| Silver | 47 | 107.8682 | Ag | 962 | 2212 | 10.5 | ancient | [Kr] 4d10 5s1 | |
| Sodium | 11 | 22.9897 | Na | 98 | 883 | 0.97 | 2.75 | 1807 | [Ne] 3s1 |
| Strontium | 38 | 87.62 | Sr | 769 | 1384 | 2.54 | 1790 | [Kr] 5s2 | |
| Sulfur | 16 | 32.065 | S | 113 | 445 | 2.07 | 0.052 | ancient | [Ne] 3s2 3p4 |
| Tantalum | 73 | 180.9479 | Ta | 2996 | 5425 | 16.65 | 1802 | [Xe] 4f14 5d3 6s2 | |
| Technetium | 43 | 98 | Tc | 2200 | 4877 | 11.5 | 1937 | [Kr] 4d5 5s2 | |
| Tellurium | 52 | 127.6 | Te | 449 | 990 | 6.24 | 1783 | [Kr] 4d10 5s2 5p4 | |
| Terbium | 65 | 158.9253 | Tb | 1360 | 3041 | 8.23 | 1843 | [Xe] 4f9 6s2 | |
| Thallium | 81 | 204.3833 | Tl | 303 | 1457 | 11.85 | 1861 | [Xe] 4f14 5d10 6s2 6p1 | |
| Thorium | 90 | 232.0381 | Th | 1750 | 4790 | 11.72 | 1829 | [Rn] 6d2 7s2 | |
| Thulium | 69 | 168.9342 | Tm |