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No. Symbol Name Atomic mass Family State Melts at Boils at Density g/cm³ Electro-negativity Discovered 1 H Hydrogen 1.0080 Nonmetal Gas -259.3 °C -252.9 °C 0.00008988 2.2 1766 2 He Helium 4.00260 Noble gas Gas -272.2 °C -268.9 °C 0.0001785 no value 1868 3 Li Lithium 7.0 Alkali metal Solid 180.5 °C 1,342 °C 0.53 0.98 1817 4 Be Beryllium 9.012183 Alkaline earth metal Solid 1,287 °C 2,471 °C 1.85 1.57 1798 5 B Boron 10.81 Metalloid Solid 2,075 °C 4,000 °C 2.37 2.04 1808 6 C Carbon 12.011 Nonmetal Solid 3,550 °C 3,825 °C 2.27 2.55 Ancient 7 N Nitrogen 14.007 Nonmetal Gas -210 °C -195.8 °C 0.0012506 3.04 1772 8 O Oxygen 15.999 Nonmetal Gas -218.8 °C -182.9 °C 0.001429 3.44 1774 9 F Fluorine 18.99840316 Halogen Gas -219.6 °C -188.1 °C 0.001696 3.98 1886 10 Ne Neon 20.180 Noble gas Gas -248.6 °C -246.1 °C 0.0008999 no value 1898 11 Na Sodium 22.9897693 Alkali metal Solid 97.8 °C 882.9 °C 0.97 0.93 1807 12 Mg Magnesium 24.305 Alkaline earth metal Solid 649.9 °C 1,090 °C 1.74 1.31 1808 13 Al Aluminium 26.981538 Post-transition metal Solid 660.3 °C 2,519 °C 2.7 1.61 1825 14 Si Silicon 28.085 Metalloid Solid 1,414 °C 3,265 °C 2.33 1.9 1824 15 P Phosphorus 30.97376200 Nonmetal Solid 44.2 °C 280.5 °C 1.82 2.19 1669 16 S Sulfur 32.07 Nonmetal Solid 115.2 °C 444.6 °C 2.07 2.58 Ancient 17 Cl Chlorine 35.45 Halogen Gas -101.5 °C -34 °C 0.003214 3.16 1774 18 Ar Argon 39.9 Noble gas Gas -189.3 °C -185.8 °C 0.0017837 no value 1894 19 K Potassium 39.0983 Alkali metal Solid 63.4 °C 758.9 °C 0.89 0.82 1807 20 Ca Calcium 40.08 Alkaline earth metal Solid 841.9 °C 1,484 °C 1.54 1 1808 21 Sc Scandium 44.95591 Transition metal Solid 1,541 °C 2,836 °C 2.99 1.36 1879 22 Ti Titanium 47.867 Transition metal Solid 1,668 °C 3,287 °C 4.5 1.54 1791 23 V Vanadium 50.9415 Transition metal Solid 1,910 °C 3,407 °C 6 1.63 1801 24 Cr Chromium 51.996 Transition metal Solid 1,907 °C 2,671 °C 7.15 1.66 1797 25 Mn Manganese 54.93804 Transition metal Solid 1,246 °C 2,061 °C 7.3 1.55 1774 26 Fe Iron 55.84 Transition metal Solid 1,538 °C 2,861 °C 7.87 1.83 Ancient 27 Co Cobalt 58.93319 Transition metal Solid 1,495 °C 2,927 °C 8.86 1.88 1735 28 Ni Nickel 58.693 Transition metal Solid 1,455 °C 2,913 °C 8.91 1.91 1751 29 Cu Copper 63.55 Transition metal Solid 1,085 °C 2,562 °C 8.93 1.9 Ancient 30 Zn Zinc 65.4 Transition metal Solid 419.5 °C 906.9 °C 7.13 1.65 1746 31 Ga Gallium 69.723 Post-transition metal Solid 29.8 °C 2,204 °C 5.91 1.81 1875 32 Ge Germanium 72.63 Metalloid Solid 938.3 °C 2,833 °C 5.32 2.01 1886 33 As Arsenic 74.92159 Metalloid Solid 816.9 °C 613.9 °C 5.78 2.18 Ancient 34 Se Selenium 78.97 Nonmetal Solid 220.5 °C 684.9 °C 4.81 2.55 1817 35 Br Bromine 79.90 Halogen Liquid -7.2 °C 58.8 °C 3.11 2.96 1826 36 Kr Krypton 83.80 Noble gas Gas -157.4 °C -153.2 °C 0.003733 3 1898 37 Rb Rubidium 85.468 Alkali metal Solid 39.3 °C 687.9 °C 1.53 0.82 1861 38 Sr Strontium 87.62 Alkaline earth metal Solid 776.9 °C 1,382 °C 2.64 0.95 1790 39 Y Yttrium 88.90584 Transition metal Solid 1,522 °C 3,345 °C 4.47 1.22 1794 40 Zr Zirconium 91.22 Transition metal Solid 1,855 °C 4,409 °C 6.52 1.33 1789 41 Nb Niobium 92.90637 Transition metal Solid 2,477 °C 4,744 °C 8.57 1.6 1801 42 Mo Molybdenum 95.95 Transition metal Solid 2,623 °C 4,639 °C 10.2 2.16 1778 43 Tc Technetium 96.90636 Transition metal Solid 2,157 °C 4,265 °C 11 1.9 1937 44 Ru Ruthenium 101.1 Transition metal Solid 2,334 °C 4,150 °C 12.1 2.2 1827 45 Rh Rhodium 102.9055 Transition metal Solid 1,964 °C 3,695 °C 12.4 2.28 1803 46 Pd Palladium 106.42 Transition metal Solid 1,555 °C 2,963 °C 12 2.2 1803 47 Ag Silver 107.868 Transition metal Solid 961.8 °C 2,162 °C 10.5 1.93 Ancient 48 Cd Cadmium 112.41 Transition metal Solid 321.1 °C 766.9 °C 8.69 1.69 1817 49 In Indium 114.818 Post-transition metal Solid 156.6 °C 2,072 °C 7.31 1.78 1863 50 Sn Tin 118.71 Post-transition metal Solid 231.9 °C 2,602 °C 7.29 1.96 Ancient 51 Sb Antimony 121.760 Metalloid Solid 630.6 °C 1,587 °C 6.68 2.05 Ancient 52 Te Tellurium 127.6 Metalloid Solid 449.5 °C 987.9 °C 6.23 2.1 1782 53 I Iodine 126.9045 Halogen Solid 113.7 °C 184.4 °C 4.93 2.66 1811 54 Xe Xenon 131.29 Noble gas Gas -111.8 °C -108.1 °C 0.005887 2.6 1898 55 Cs Caesium 132.9054520 Alkali metal Solid 28.4 °C 670.9 °C 1.93 0.79 1860 56 Ba Barium 137.33 Alkaline earth metal Solid 726.9 °C 1,897 °C 3.62 0.89 1808 57 La Lanthanum 138.9055 Lanthanide Solid 917.9 °C 3,464 °C 6.15 1.1 1839 58 Ce Cerium 140.116 Lanthanide Solid 797.9 °C 3,424 °C 6.77 1.12 1803 59 Pr Praseodymium 140.90766 Lanthanide Solid 930.9 °C 3,520 °C 6.77 1.13 1885 60 Nd Neodymium 144.24 Lanthanide Solid 1,021 °C 3,074 °C 7.01 1.14 1885 61 Pm Promethium 144.91276 Lanthanide Solid 1,042 °C 3,000 °C 7.26 no value 1945 62 Sm Samarium 150.4 Lanthanide Solid 1,074 °C 1,794 °C 7.52 1.17 1879 63 Eu Europium 151.964 Lanthanide Solid 821.9 °C 1,529 °C 5.24 no value 1901 64 Gd Gadolinium 157.25 Lanthanide Solid 1,313 °C 3,273 °C 7.9 1.2 1880 65 Tb Terbium 158.92535 Lanthanide Solid 1,356 °C 3,230 °C 8.23 no value 1843 66 Dy Dysprosium 162.500 Lanthanide Solid 1,412 °C 2,567 °C 8.55 1.22 1886 67 Ho Holmium 164.93033 Lanthanide Solid 1,474 °C 2,700 °C 8.8 1.23 1878 68 Er Erbium 167.26 Lanthanide Solid 1,529 °C 2,868 °C 9.07 1.24 1843 69 Tm Thulium 168.93422 Lanthanide Solid 1,545 °C 1,950 °C 9.32 1.25 1879 70 Yb Ytterbium 173.05 Lanthanide Solid 818.9 °C 1,196 °C 6.9 no value 1878 71 Lu Lutetium 174.9667 Lanthanide Solid 1,663 °C 3,402 °C 9.84 1.27 1907 72 Hf Hafnium 178.49 Transition metal Solid 2,233 °C 4,603 °C 13.3 1.3 1923 73 Ta Tantalum 180.9479 Transition metal Solid 3,017 °C 5,458 °C 16.4 1.5 1802 74 W Tungsten 183.84 Transition metal Solid 3,422 °C 5,555 °C 19.3 2.36 1783 75 Re Rhenium 186.207 Transition metal Solid 3,186 °C 5,596 °C 20.8 1.9 1925 76 Os Osmium 190.2 Transition metal Solid 3,033 °C 5,012 °C 22.57 2.2 1803 77 Ir Iridium 192.22 Transition metal Solid 2,446 °C 4,428 °C 22.42 2.2 1803 78 Pt Platinum 195.08 Transition metal Solid 1,768 °C 3,825 °C 21.46 2.28 1735 79 Au Gold 196.96657 Transition metal Solid 1,064 °C 2,856 °C 19.28 2.54 Ancient 80 Hg Mercury 200.59 Transition metal Liquid -38.8 °C 356.7 °C 13.53 2 Ancient 81 Tl Thallium 204.383 Post-transition metal Solid 303.9 °C 1,473 °C 11.8 1.62 1861 82 Pb Lead 207 Post-transition metal Solid 327.5 °C 1,749 °C 11.34 2.33 Ancient 83 Bi Bismuth 208.98040 Post-transition metal Solid 271.4 °C 1,564 °C 9.81 2.02 1753 84 Po Polonium 208.98243 Metalloid Solid 253.9 °C 961.9 °C 9.32 2 1898 85 At Astatine 209.98715 Halogen Solid 301.9 °C no value 7 2.2 1940 86 Rn Radon 222.01758 Noble gas Gas -71.1 °C -61.7 °C 0.00973 no value 1900 87 Fr Francium 223.01973 Alkali metal Solid 26.9 °C no value no value 0.7 1939 88 Ra Radium 226.02541 Alkaline earth metal Solid 699.9 °C 1,140 °C 5 0.9 1898 89 Ac Actinium 227.02775 Actinide Solid 1,051 °C 3,198 °C 10.07 1.1 1899 90 Th Thorium 232.038 Actinide Solid 1,750 °C 4,788 °C 11.72 1.3 1828 91 Pa Protactinium 231.03588 Actinide Solid 1,572 °C no value 15.37 1.5 1913 92 U Uranium 238.0289 Actinide Solid 1,135 °C 4,131 °C 18.95 1.38 1789 93 Np Neptunium 237.048172 Actinide Solid 643.9 °C 3,902 °C 20.25 1.36 1940 94 Pu Plutonium 244.06420 Actinide Solid 639.9 °C 3,228 °C 19.84 1.28 1940 95 Am Americium 243.061380 Actinide Solid 1,176 °C 2,011 °C 13.69 1.3 1944 96 Cm Curium 247.07035 Actinide Solid 1,345 °C 3,127 °C 13.51 1.3 1944 97 Bk Berkelium 247.07031 Actinide Solid 1,050 °C no value 14 1.3 1949 98 Cf Californium 251.07959 Actinide Solid 899.9 °C no value no value 1.3 1950 99 Es Einsteinium 252.0830 Actinide Solid 859.9 °C no value no value 1.3 1952 100 Fm Fermium 257.09511 Actinide Solid 1,527 °C no value no value 1.3 1952 101 Md Mendelevium 258.09843 Actinide Solid 826.9 °C no value no value 1.3 1955 102 No Nobelium 259.10100 Actinide Solid 826.9 °C no value no value 1.3 1957 103 Lr Lawrencium 266.120 Actinide Solid 1,627 °C no value no value 1.3 1961 104 Rf Rutherfordium 267.122 Transition metal Solid no value no value no value no value 1964 105 Db Dubnium 268.126 Transition metal Solid no value no value no value no value 1967 106 Sg Seaborgium 269.128 Transition metal Solid no value no value no value no value 1974 107 Bh Bohrium 270.133 Transition metal Solid no value no value no value no value 1976 108 Hs Hassium 269.1336 Transition metal Solid no value no value no value no value 1984 109 Mt Meitnerium 277.154 Transition metal Solid no value no value no value no value 1982 110 Ds Darmstadtium 282.166 Transition metal Solid no value no value no value no value 1994 111 Rg Roentgenium 282.169 Transition metal Solid no value no value no value no value 1994 112 Cn Copernicium 286.179 Transition metal Solid no value no value no value no value 1996 113 Nh Nihonium 286.182 Post-transition metal Solid no value no value no value no value 2004 114 Fl Flerovium 290.192 Post-transition metal Solid no value no value no value no value 1998 115 Mc Moscovium 290.196 Post-transition metal Solid no value no value no value no value 2003 116 Lv Livermorium 293.205 Post-transition metal Solid no value no value no value no value 2000 117 Ts Tennessine 294.211 Halogen Solid no value no value no value no value 2010 118 Og Oganesson 295.216 Noble gas Gas no value no value no value no value 2006
About the columns Atomic mass is in unified atomic mass units (u). For elements with no stable form, the mass of a long-lived form is given.State is the state at room temperature. For the heaviest elements it is a prediction.Melts at / Boils at are in degrees Celsius at normal pressure.Density is in grams per cubic centimetre. For gases it is the density of the gas at 0 °C.Electronegativity is on the Pauling scale.Discovered : "Ancient" means the element was known before written records of its discovery."No value" means the property has not been measured, usually because only a few atoms of the element have ever existed.
Things to try with the list Sort by density to see the heavy metals rise to the top, far ahead of lead, and the gases sink to the bottom.Sort by melting point to find the metals that survive the greatest heat at one end and, at the other, the gases that stay liquid only close to the coldest temperature possible.Sort by year discovered to watch chemistry grow: a handful of metals known since ancient times, a rush of discoveries in the 1700s and 1800s, and the man-made elements after 1940.Sort by electronegativity to see fluorine and the other elements that pull hardest on electrons at the top, and the alkali metals at the bottom.Type a family name such as "halogen" in the filter box to compare just those elements.How to read a row Each row is one element, with its atomic number, symbol and name first. The atomic number is the number of protons in the atom, and it is the number that fixes which element it is. Tap a name to open the element's own page, with its uses, its electron shells drawn as rings, and where it ranks among all 118.
Elements