List of elements by symbol
This is a list of elements by atomic number with symbol.
| Atomic
Number |
Name | Symbol | Group | Period
Number |
|---|---|---|---|---|
| 1 | Hydrogen | H | 1 | 1 |
| 2 | Helium | He | 18 | 1 |
| 3 | Lithium | Li | 1 | 2 |
| 4 | Beryllium | Be | 2 | 2 |
| 5 | Boron | B | 13 | 2 |
| 6 | Carbon | C | 14 | 2 |
| 7 | Nitrogen | N | 15 | 2 |
| 8 | Oxygen | O | 16 | 2 |
| 9 | Fluorine | F | 17 | 2 |
| 10 | Neon | Ne | 18 | 2 |
| 11 | Sodium | Na | 1 | 3 |
| 12 | Magnesium | Mg | 2 | 3 |
| 13 | Aluminium | Al | 13 | 3 |
| 14 | Silicon | Si | 14 | 3 |
| 15 | Phosphorus | P | 15 | 3 |
| 16 | Sulfur | S | 16 | 3 |
| 17 | Chlorine | Cl | 17 | 3 |
| 18 | Argon | Ar | 18 | 3 |
| 19 | Potassium | K | 1 | 4 |
| 20 | Calcium | Ca | 2 | 4 |
| 21 | Scandium | Sc | 3 | 4 |
| 22 | Titanium | Ti | 4 | 4 |
| 23 | Vanadium | V | 5 | 4 |
| 24 | Chromium | Cr | 6 | 4 |
| 25 | Manganese | Mn | 7 | 4 |
| 26 | Iron | Fe | 8 | 4 |
| 27 | Cobalt | Co | 9 | 4 |
| 28 | Nickel | Ni | 10 | 4 |
| 29 | Copper | Cu | 11 | 4 |
| 30 | Zinc | Zn | 12 | 4 |
| 31 | Gallium | Ga | 13 | 4 |
| 32 | Germanium | Ge | 14 | 4 |
| 33 | Arsenic | As | 15 | 4 |
| 34 | Selenium | Se | 16 | 4 |
| 35 | Bromine | Br | 17 | 4 |
| 36 | Krypton | Kr | 18 | 4 |
| 37 | Rubidium | Rb | 1 | 5 |
| 38 | Strontium | Sr | 2 | 5 |
| 39 | Yttrium | Y | 3 | 5 |
| 40 | Zirconium | Zr | 4 | 5 |
| 41 | Niobium | Nb | 5 | 5 |
| 42 | Molybdenum | Mo | 6 | 5 |
| 43 | Technetium | Tc | 7 | 5 |
| 44 | Ruthenium | Ru | 8 | 5 |
| 45 | Rhodium | Rh | 9 | 5 |
| 46 | Palladium | Pd | 10 | 5 |
| 47 | Silver | Ag | 11 | 5 |
| 48 | Cadmium | Cd | 12 | 5 |
| 49 | Indium | In | 13 | 5 |
| 50 | Tin | Sn | 14 | 5 |
| 51 | Antimony | Sb | 15 | 5 |
| 52 | Tellurium | Te | 16 | 5 |
| 53 | Iodine | I | 17 | 5 |
| 54 | Xenon | Xe | 18 | 5 |
| 55 | Cesium | Cs | 1 | 6 |
| 56 | Barium | Ba | 2 | 6 |
| 57 | Lanthanum | La | 3 | 6 |
| 58 | Cerium | Ce | 3 | 6 |
| 59 | Praseodymium | Pr | 3 | 6 |
| 60 | Neodymium | Nd | 3 | 6 |
| 61 | Promethium | Pm | 3 | 6 |
| 62 | Samarium | Sm | 3 | 6 |
| 63 | Europium | Eu | 3 | 6 |
| 64 | Gadolinium | Gd | 3 | 6 |
| 65 | Terbium | Tb | 3 | 6 |
| 66 | Dysprosium | Dy | 3 | 6 |
| 67 | Holmium | Ho | 3 | 6 |
| 68 | Erbium | Er | 3 | 6 |
| 69 | Thulium | Tm | 3 | 6 |
| 70 | Ytterbium | Yb | 3 | 6 |
| 71 | Lutetium | Lu | 3 | 6 |
| 72 | Hafnium | Hf | 4 | 6 |
| 73 | Tantalum | Ta | 5 | 6 |
| 74 | Tungsten | W | 6 | 6 |
| 75 | Rhenium | Re | 7 | 6 |
| 76 | Osmium | Os | 8 | 6 |
| 77 | Iridium | Ir | 9 | 6 |
| 78 | Platinum | Pt | 10 | 6 |
| 79 | Gold | Au | 11 | 6 |
| 80 | Mercury | Hg | 12 | 6 |
| 81 | Thallium | Tl | 13 | 6 |
| 82 | Lead | Pb | 14 | 6 |
| 83 | Bismuth | Bi | 15 | 6 |
| 84 | Polonium | Po | 16 | 6 |
| 85 | Astatine | At | 17 | 6 |
| 86 | Radon | Rn | 18 | 6 |
| 87 | Francium | Fr | 1 | 7 |
| 88 | Radium | Ra | 2 | 7 |
| 89 | Actinium | Ac | 3 | 7 |
| 90 | Thorium | Th | 3 | 7 |
| 91 | Protactinium | Pa | 3 | 7 |
| 92 | Uranium | U | 3 | 7 |
| 93 | Neptunium | Np | 3 | 7 |
| 94 | Plutonium | Pu | 3 | 7 |
| 95 | Americium | Am | 3 | 7 |
| 96 | Curium | Cm | 3 | 7 |
| 97 | Berkelium | Bk | 3 | 7 |
| 98 | Californium | Cf | 3 | 7 |
| 99 | Einsteinium | Es | 3 | 7 |
| 100 | Fermium | Fm | 3 | 7 |
| 101 | Mendelevium | Md | 3 | 7 |
| 102 | Nobelium | No | 3 | 7 |
| 103 | Lawrencium | Lr | 3 | 7 |
- Second list
| Chemical sym | Name | Origin of symbol | Atomic No. | Atomic mass | Density (near r.t.) | Melting point | Boiling point | Year of discovery | Discoverer |
|---|---|---|---|---|---|---|---|---|---|
| Ac | Actinium | 89 | 227.0278 u | 10.07 g/cm3 | 1047 °C | 3197 °C | 1899 | Debierne | |
| Ag | Silver | Latin Argentum | 47 | 107.8682 u | 10.49 g/cm3 | 961.9 °C | 2212 °C | prehistoric | unknown |
| Al | Aluminium | 13 | 26.981539 u | 2.70 g/cm3 | 660.5 °C | 2467 °C | 1825 | Oersted | |
| Am | Americium | 95 | 243.0614 u | 13.67 g/cm3 | 994 °C | 2607 °C | 1944 | Seaborg | |
| Ar | Argon | 18 | 39.948 u | 1.66 g/l | -189.4 °C | -185.9 °C | 1894 | Ramsay and Rayleigh | |
| As | Arsenic | 33 | 74.92159 u | 5.72 g/cm3 | 613 °C | 613 (Subl.) °C | ca. 1250 | Albertus Magnus | |
| At | Astatine | 85 | 209.9871 u | 7 g/cm3 | 302 °C | 337 °C | 1940 | Corson and MacKenzie | |
| Au | Gold | Latin Aurum | 79 | 196.96654 u | 19.32 g/cm3 | 1064.4 °C | 2940 °C | prehistoric | unknown |
| B | Boron | 5 | 10.811 u | 2.46 g/cm3 | 2300 °C | 2550 °C | 1808 | Davy and Gay-Lussac | |
| Ba | Barium | 56 | 137.327 u | 3.65 g/cm3 | 725 °C | 1640 °C | 1808 | Davy | |
| Be | Beryllium | 4 | 9.012182 u | 1.85 g/cm3 | 1278 °C | 2970 °C | 1797 | Vauqueli | |
| Bh | Bohrium | 107 | 262. | 1976 | Oganessian | ||||
| Bi | Bismuth | 83 | 208.98037 u | 9.80 g/cm3 | 271.4 °C | 1560 °C | 1540 | Agricola | |
| Bk | Berkelium | 97 | 247.0703 u | 13.25 g/cm3 | 986 °C | 2627 °C | 1949 | Seaborg | |
| Br | Bromine | 35 | 79.904 u | 3.14 g/cm3 | -7.3 °C | 58.8 °C | 1826 | Balard | |
| C | Carbon | 6 | 12.011 u | 3.51 g/cm3 | 3550 °C | 4827 °C | prehistoric | unknown | |
| Ca | Calcium | 20 | 40.078 u | 1.54 g/cm3 | 839 °C | 1487 °C | 1808 | Davy | |
| Cd | Cadmium | 48 | 112.411 u | 8.64 g/cm3 | 321 °C | 765 °C | 1817 | Stromeyer and Hermann | |
| Ce | Cerium | 58 | 140.115 u | 6.77 g/cm3 | 798 °C | 3257 °C | 1803 | von Hisinger and Berzelius | |
| Cf | Californium | 98 | 251.0796 u | 15.1 g/cm3 | 900 °C | 1472 °C | 1950 | Seaborg | |
| Cl | Chlorine | 17 | 35.4527 u | 2.95 g/l | -34.6 °C | -101 °C | 1774 | Scheele | |
| Cm | Curium | 96 | 247.0703 u | 13.51 g/cm3 | 1340 °C | 3110 °C | 1944 | Seaborg | |
| Cn | Copernicium | 112 | 277 u | 1996 | Society for Heavy Ion Research | ||||
| Co | Cobalt | 27 | 58.9332 u | 8.89 g/cm3 | 1495 °C | 2870 °C | 1735 | Brandt | |
| Cr | Chromium | 24 | 51.9961 u | 7.14 g/cm3 | 1857 °C | 2482 °C | 1797 | Vauquelin | |
| Cs | Caesium | 55 | 132.90543 u | 1.90 g/cm3 | 28.4 °C | 690 °C | 1860 | Kirchhoff and Bunsen | |
| Cu | Copper | Latin Cuprum | 29 | 63.546 u | 8.92 g/cm3 | 1083.5 °C | 2595 °C | prehistoric | unknown |
| Db | Dubnium | 105 | 262.1138 u | 1967/70 | Flerow oder Ghiorso | ||||
| Ds | Darmstadtium | 110 | 269 u | 1994 | Society for Heavy Ion Research | ||||
| Dy | Dysprosium | 66 | 162.5 u | 8.56 g/cm3 | 1409 °C | 2335 °C | 1886 | Lecoq de Boisbaudran | |
| Er | Erbium | 68 | 167.26 u | 9.05 g/cm3 | 1522 °C | 2510 °C | 1842 | Mosander | |
| Es | Einsteinium | 99 | 252.0829 u | 860 °C | 1952 | Seaborg | |||
| Eu | Europium | 63 | 151.965 u | 5.25 g/cm3 | 822 °C | 1597 °C | 1901 | Demaçay | |
| F | Fluorine | 9 | 18.9984032 u | 1.58 g/l | -219.6 °C | -188.1 °C | 1886 | Moissan | |
| Fe | Iron | Latin Ferrum | 26 | 55.847 u | 7.87 g/cm3 | 1535 °C | 2750 °C | prehistoric | unknown |
| Fl | Flerovium | 114 | |||||||
| Fm | Fermium | 100 | 257.0951 u | 1952 | Seaborg | ||||
| Fr | Francium | 87 | 223.0197 u | 27 °C | 677 °C | 1939 | Perey | ||
| Ga | Gallium | 31 | 69.723 u | 5.91 g/cm3 | 29.8 °C | 2403 °C | 1875 | Lecoq de Boiskaudran | |
| Gd | Gadolinium | 64 | 157.25 u | 7.89 g/cm3 | 1311 °C | 3233 °C | 1880 | de Marignac | |
| Ge | Germanium | 32 | 72.61 u | 5.32 g/cm3 | 937.4 °C | 2830 °C | 1886 | Winkler | |
| H | Hydrogen | 1 | 1.00794 u | 0.084 g/l | -259.1 °C | -252.9 °C | 1766 | Cavendish | |
| He | Helium | 2 | 4.002602 u | 0.17 g/l | -272.2 °C | -268.9 °C | 1895 | Ramsay and Cleve | |
| Hf | Hafnium | 72 | 178.49 u | 13.31 g/cm3 | 2150 °C | 5400 °C | 1923 | Coster and vón Hevesy | |
| Hg | Mercury | Latin Hydragyrum - quicksilver | 80 | 200.59 u | 13.55 g/cm3 | -38.9 °C | 356.6 °C | prehistoric | unknown |
| Ho | Holmium | 67 | 164.93032 u | 8.78 g/cm3 | 1470 °C | 2720 °C | 1878 | Soret | |
| Hs | Hassium | 108 | 265 u | 1984 | Society for Heavy Ion Research | ||||
| I | Iodine | 53 | 126.90447 u | 4.94 g/cm3 | 113.5 °C | 184.4 °C | 1811 | Courtois | |
| In | Indium | 49 | 114.82 u | 7.31 g/cm3 | 156.2 °C | 2080 °C | 1863 | Reich and Richter | |
| Ir | Iridium | 77 | 192.22 u | 22.65 g/cm3 | 2410 °C | 4130 °C | 1803 | Tenant and andere | |
| K | Potassium | German Kalium | 19 | 39.0983 u | 0.86 g/cm3 | 63.7 °C | 774 °C | 1807 | Davy |
| Kr | Krypton | 36 | 83.8 u | 3.48 g/l | -156.6 °C | -152.3 °C | 1898 | Ramsay and Travers | |
| La | Lanthanum | 57 | 138.9055 u | 6.16 g/cm3 | 920 °C | 3454 °C | 1839 | Mosander | |
| Li | Lithium | 3 | 6.941 u | 0.53 g/cm3 | 180.5 °C | 1317 °C | 1817 | Arfvedson | |
| Lr | Lawrencium | 103 | 260.1053 u | 1961 | Ghiorso | ||||
| Lu | Lutetium | 71 | 174.967 u | 9.84 g/cm3 | 1656 °C | 3315 °C | 1907 | Urbain | |
| Lv | Livermorium | 116 | |||||||
| Mc | Moscovium | 115 | |||||||
| Md | Mendelevium | 101 | 258.0986 u | 1955 | Seaborg | ||||
| Mg | Magnesium | 12 | 24.305 u | 1.74 g/cm3 | 648.8 °C | 1107 °C | 1755 | Black | |
| Mn | Manganese | 25 | 54.93805 u | 7.44 g/cm3 | 1244 °C | 2097 °C | 1774 | Gahn | |
| Mo | Molybdenum | 42 | 95.94 u | 10.28 g/cm3 | 2617 °C | 5560 °C | 1778 | Scheele | |
| Mt | Meitnerium | 109 | 266 u | 1982 | Society for Heavy Ion Research | ||||
| N | Nitrogen | 7 | 14.00674 u | 1.17 g/l | -209.9 °C | -195.8 °C | 1772 | Rutherford | |
| Na | Sodium | Latin Natrium | 11 | 22.989768 u | 0.97 g/cm3 | 97.8 °C | 892 °C | 1807 | Davy |
| Nb | Niobium | 41 | 92.90638 u | 8.58 g/cm3 | 2468 °C | 4927 °C | 1801 | Hatchet | |
| Nd | Neodymium | 60 | 144.24 u | 7.00 g/cm3 | 1010 °C | 3127 °C | 1895 | von Welsbach | |
| Ne | Neon | 10 | 20.1797 u | 0.84 g/l | -248.7 °C | -246.1 °C | 1898 | Ramsay and Travers | |
| Nh | Nihonium | 113 | |||||||
| Ni | Nickel | 28 | 58.69 u | 8.91 g/cm3 | 1453 °C | 2732 °C | 1751 | Cronstedt | |
| No | Nobelium | 102 | 259.1009 u | 1958 | Seaborg | ||||
| Np | Neptunium | 93 | 237.0482 u | 20.48 g/cm3 | 640 °C | 3902 °C | 1940 | McMillan and Abelson | |
| O | Oxygen | 8 | 15.9994 u | 1.33 g/l | -218.4 °C | -182.9 °C | 1774 | Priestley and Scheele | |
| Og | Oganesson | 118 | |||||||
| Os | Osmium | 76 | 190.2 u | 22.61 g/cm3 | 3045 °C | 5027 °C | 1803 | Tenant | |
| P | Phosphorus | 15 | 30.973762 u | 1.82 g/cm3 | 44 (P4) °C | 280 (P4) °C | 1669 | Brandt | |
| Pa | Protactinium | 91 | 231.0359 u | 15.37 g/cm3 | 1554 °C | 4030 °C | 1917 | Soddy, Cranston and Hahn | |
| Pb | Lead | Latin Plumbum | 82 | 207.2 u | 11.34 g/cm3 | 327.5 °C | 1740 °C | prehistoric | unknown |
| Pd | Palladium | 46 | 106.42 u | 12.02 g/cm3 | 1552 °C | 3140 °C | 1803 | Wollaston | |
| Pm | Promethium | 61 | 146.9151 u | 7.22 g/cm3 | 1080 °C | 2730 °C | 1945 | Marinsky and Glendenin | |
| Po | Polonium | 84 | 208.9824 u | 9.20 g/cm3 | 254 °C | 962 °C | 1898 | Marie and Pierre Curie | |
| Pr | Praseodymium | 59 | 140.90765 u | 6.48 g/cm3 | 931 °C | 3212 °C | 1895 | von Welsbach | |
| Pt | Platinum | 78 | 195.08 u | 21.45 g/cm3 | 1772 °C | 3827 °C | 1557 | Scaliger | |
| Pu | Plutonium | 94 | 244.0642 u | 19.74 g/cm3 | 641 °C | 3327 °C | 1940 | Seaborg | |
| Ra | Radium | 88 | 226.0254 u | 5.50 g/cm3 | 700 °C | 1140 °C | 1898 | Marie and Pierre Curie | |
| Rb | Rubidium | 37 | 85.4678 u | 1.53 g/cm3 | 39 °C | 688 °C | 1861 | Bunsen and Kirchhoff | |
| Re | Rhenium | 75 | 186.207 u | 21.03 g/cm3 | 3180 °C | 5627 °C | 1925 | Noddack, Tacke and Berg | |
| Rf | Rutherfordium | 104 | 261.1087 u | 1964/69 | Flerow oder Ghiorso | ||||
| Rg | Roentgenium | 111 | 272 u | 1994 | Society for Heavy Ion Research | ||||
| Rh | Rhodium | 45 | 102.9055 u | 12.41 g/cm3 | 1966 °C | 3727 °C | 1803 | Wollaston | |
| Rn | Radon | 86 | 222.0176 u | 9.23 g/l | -71 °C | -61.8 °C | 1900 | Dorn | |
| Ru | Ruthenium | 44 | 101.07 u | 12.45 g/cm3 | 2310 °C | 3900 °C | 1844 | Claus | |
| S | Sulfur | 16 | 32.066 u | 2.06 g/cm3 | 113 °C | 444.7 °C | prehistoric | unknown | |
| Sb | Antimony | Latin Stibium | 51 | 121.75 u | 6.69 g/cm3 | 630.7 °C | 1750 °C | prehistoric | unknown |
| Sc | Scandium | 21 | 44.95591 u | 2.99 g/cm3 | 1539 °C | 2832 °C | 1879 | Nilson | |
| Se | Selenium | 34 | 78.96 u | 4.82 g/cm3 | 217 °C | 685 °C | 1817 | Berzelius | |
| Sg | Seaborgium | 106 | 263.1182 u | 1974 | Oganessian | ||||
| Si | Silicon | 14 | 28.0855 u | 2.33 g/cm3 | 1410 °C | 2355 °C | 1824 | Berzelius | |
| Sm | Samarium | 62 | 150.36 u | 7.54 g/cm3 | 1072 °C | 1778 °C | 1879 | Lecoq de Boisbaudran | |
| Sn | Tin | Latin Stannum | 50 | 118.71 u | 7.29 g/cm3 | 232 °C | 2270 °C | prehistoric | unknown |
| Sr | Strontium | 38 | 87.62 u | 2.63 g/cm3 | 769 °C | 1384 °C | 1790 | Crawford | |
| Ta | Tantalum | 73 | 180.9479 u | 16.68 g/cm3 | 2996 °C | 5425 °C | 1802 | Ekeberg | |
| Tb | Terbium | 65 | 158.92534 u | 8.25 g/cm3 | 1360 °C | 3041 °C | 1843 | Mosander | |
| Tc | Technetium | 43 | 98.9063 u | 11.49 g/cm3 | 2172 °C | 5030 °C | 1937 | Perrier and Segrè | |
| Te | Tellurium | 52 | 127.6 u | 6.25 g/cm3 | 449.6 °C | 990 °C | 1782 | von Reichenstein | |
| Th | Thorium | 90 | 232.0381 u | 11.72 g/cm3 | 1750 °C | 4787 °C | 1829 | Berzelius | |
| Ti | Titanium | 22 | 47.88 u | 4.51 g/cm3 | 1660 °C | 3260 °C | 1791 | Gregor and Klaproth | |
| Tl | Thallium | 81 | 204.3833 u | 11.85 g/cm3 | 303.6 °C | 1457 °C | 1861 | Crookes | |
| Tm | Thulium | 69 | 168.93421 u | 9.32 g/cm3 | 1545 °C | 1727 °C | 1879 | Cleve | |
| Ts | Tennessine | 117 | |||||||
| U | Uranium | 92 | 238.0289 u | 18.97 g/cm3 | 1132.4 °C | 3818 °C | 1789 | Klaproth | |
| V | Vanadium | 23 | 50.9415 u | 6.09 g/cm3 | 1890 °C | 3380 °C | 1801 | del Rio | |
| W | Tungsten | German Wolfram | 74 | 183.85 u | 19.26 g/cm3 | 3407 °C | 5927 °C | 1783 | Gebrüder de Elhuyar |
| Xe | Xenon | 54 | 131.29 u | 4.49 g/l | -111.9 °C | -107 °C | 1898 | Ramsay and Travers | |
| Y | Yttrium | 39 | 88.90585 u | 4.47 g/cm3 | 1523 °C | 3337 °C | 1794 | Gadolin | |
| Yb | Ytterbium | 70 | 173.04 u | 6.97 g/cm3 | 824 °C | 1193 °C | 1878 | de Marignac | |
| Zn | Zinc | 30 | 65.39 u | 7.14 g/cm3 | 419.6 °C | 907 °C | prehistoric | unknown | |
| Zr | Zirconium | 40 | 91.224 u | 6.51 g/cm3 | 1852 °C | 4377 °C | 1789 | Klaproth |
List Of Elements By Symbol Media
The periodic table, elements being denoted by their symbols