atomic_number symbol name wikidata atomic_mass period group block group_block standard_state electron_configuration electronegativity atomic_radius ionization_energy electron_affinity oxidation_states melting_point boiling_point density year_discovered cpk_color 1 H Hydrogen Q556 1.008 1 1 s Nonmetal Gas 1s1 2.2 120 13.598 0.754 +1, -1 13.81 20.28 0.00008988 1766 #FFFFFF 2 He Helium Q560 4.0026 1 18 s Noble gas Gas 1s2 140 24.587 0 0.95 4.22 0.0001785 1868 #D9FFFF 3 Li Lithium Q568 7 2 1 s Alkali metal Solid [He]2s1 0.98 182 5.392 0.618 +1 453.65 1615 0.534 1817 #CC80FF 4 Be Beryllium Q569 9.012183 2 2 s Alkaline earth metal Solid [He]2s2 1.57 153 9.323 +2 1560 2744 1.85 1798 #C2FF00 5 B Boron Q618 10.81 2 13 p Metalloid Solid [He]2s2 2p1 2.04 192 8.298 0.277 +3 2348 4273 2.37 1808 #FFB5B5 6 C Carbon Q623 12.011 2 14 p Nonmetal Solid [He]2s2 2p2 2.55 170 11.26 1.263 +4, +2, -4 3823 4098 2.267 Ancient #909090 7 N Nitrogen Q627 14.007 2 15 p Nonmetal Gas [He] 2s2 2p3 3.04 155 14.534 +5, +4, +3, +2, +1, -1, -2, -3 63.15 77.36 0.0012506 1772 #3050F8 8 O Oxygen Q629 15.999 2 16 p Nonmetal Gas [He]2s2 2p4 3.44 152 13.618 1.461 -2 54.36 90.2 0.001429 1774 #FF0D0D 9 F Fluorine Q650 18.99840316 2 17 p Halogen Gas [He]2s2 2p5 3.98 135 17.423 3.339 -1 53.53 85.03 0.001696 1670 #90E050 10 Ne Neon Q654 20.18 2 18 p Noble gas Gas [He]2s2 2p6 154 21.565 0 24.56 27.07 0.0008999 1898 #B3E3F5 11 Na Sodium Q658 22.9897693 3 1 s Alkali metal Solid [Ne]3s1 0.93 227 5.139 0.548 +1 370.95 1156 0.97 1807 #AB5CF2 12 Mg Magnesium Q660 24.305 3 2 s Alkaline earth metal Solid [Ne]3s2 1.31 173 7.646 +2 923 1363 1.74 1808 #8AFF00 13 Al Aluminum Q663 26.981538 3 13 p Post-transition metal Solid [Ne]3s2 3p1 1.61 184 5.986 0.441 +3 933.437 2792 2.7 Ancient #BFA6A6 14 Si Silicon Q670 28.085 3 14 p Metalloid Solid [Ne]3s2 3p2 1.9 210 8.152 1.385 +4, +2, -4 1687 3538 2.3296 1854 #F0C8A0 15 P Phosphorus Q674 30.973762 3 15 p Nonmetal Solid [Ne]3s2 3p3 2.19 180 10.487 0.746 +5, +3, -3 317.3 553.65 1.82 1669 #FF8000 16 S Sulfur Q682 32.07 3 16 p Nonmetal Solid [Ne]3s2 3p4 2.58 180 10.36 2.077 +6, +4, -2 388.36 717.75 2.067 Ancient #FFFF30 17 Cl Chlorine Q688 35.45 3 17 p Halogen Gas [Ne]3s2 3p5 3.16 175 12.968 3.617 +7, +5, +1, -1 171.65 239.11 0.003214 1774 #1FF01F 18 Ar Argon Q696 39.9 3 18 p Noble gas Gas [Ne]3s2 3p6 188 15.76 0 83.8 87.3 0.0017837 1894 #80D1E3 19 K Potassium Q703 39.0983 4 1 s Alkali metal Solid [Ar]4s1 0.82 275 4.341 0.501 +1 336.53 1032 0.89 1807 #8F40D4 20 Ca Calcium Q706 40.08 4 2 s Alkaline earth metal Solid [Ar]4s2 1 231 6.113 +2 1115 1757 1.54 Ancient #3DFF00 21 Sc Scandium Q713 44.95591 4 3 d Transition metal Solid [Ar]4s2 3d1 1.36 211 6.561 0.188 +3 1814 3109 2.99 1879 #E6E6E6 22 Ti Titanium Q716 47.867 4 4 d Transition metal Solid [Ar]4s2 3d2 1.54 187 6.828 0.079 +4, +3, +2 1941 3560 4.5 1791 #BFC2C7 23 V Vanadium Q722 50.9415 4 5 d Transition metal Solid [Ar]4s2 3d3 1.63 179 6.746 0.525 +5, +4, +3, +2 2183 3680 6 1801 #A6A6AB 24 Cr Chromium Q725 51.996 4 6 d Transition metal Solid [Ar]3d5 4s1 1.66 189 6.767 0.666 +6, +3, +2 2180 2944 7.15 1797 #8A99C7 25 Mn Manganese Q731 54.93804 4 7 d Transition metal Solid [Ar]4s2 3d5 1.55 197 7.434 +7, +4, +3, +2 1519 2334 7.3 1774 #9C7AC7 26 Fe Iron Q677 55.84 4 8 d Transition metal Solid [Ar]4s2 3d6 1.83 194 7.902 0.163 +3, +2 1811 3134 7.874 Ancient #E06633 27 Co Cobalt Q740 58.93319 4 9 d Transition metal Solid [Ar]4s2 3d7 1.88 192 7.881 0.661 +3, +2 1768 3200 8.86 1735 #F090A0 28 Ni Nickel Q744 58.693 4 10 d Transition metal Solid [Ar]4s2 3d8 1.91 163 7.64 1.156 +3, +2 1728 3186 8.912 1751 #50D050 29 Cu Copper Q753 63.55 4 11 d Transition metal Solid [Ar]4s1 3d10 1.9 140 7.726 1.228 +2, +1 1357.77 2835 8.933 Ancient #C88033 30 Zn Zinc Q758 65.4 4 12 d Transition metal Solid [Ar]4s2 3d10 1.65 139 9.394 +2 692.68 1180 7.134 1746 #7D80B0 31 Ga Gallium Q861 69.723 4 13 p Post-transition metal Solid [Ar]4s2 3d10 4p1 1.81 187 5.999 0.3 +3 302.91 2477 5.91 1875 #C28F8F 32 Ge Germanium Q867 72.63 4 14 p Metalloid Solid [Ar]4s2 3d10 4p2 2.01 211 7.9 1.35 +4, +2 1211.4 3106 5.323 1886 #668F8F 33 As Arsenic Q871 74.92159 4 15 p Metalloid Solid [Ar]4s2 3d10 4p3 2.18 185 9.815 0.81 +5, +3, -3 1090 887 5.776 Ancient #BD80E3 34 Se Selenium Q876 78.97 4 16 p Nonmetal Solid [Ar]4s2 3d10 4p4 2.55 190 9.752 2.021 +6, +4, -2 493.65 958 4.809 1817 #FFA100 35 Br Bromine Q879 79.9 4 17 p Halogen Liquid [Ar]4s2 3d10 4p5 2.96 183 11.814 3.365 +5, +1, -1 265.95 331.95 3.11 1826 #A62929 36 Kr Krypton Q888 83.8 4 18 p Noble gas Gas [Ar]4s2 3d10 4p6 3 202 14 0 115.79 119.93 0.003733 1898 #5CB8D1 37 Rb Rubidium Q895 85.468 5 1 s Alkali metal Solid [Kr]5s1 0.82 303 4.177 0.468 +1 312.46 961 1.53 1861 #702EB0 38 Sr Strontium Q938 87.62 5 2 s Alkaline earth metal Solid [Kr]5s2 0.95 249 5.695 +2 1050 1655 2.64 1790 #00FF00 39 Y Yttrium Q941 88.90584 5 3 d Transition metal Solid [Kr]5s2 4d1 1.22 219 6.217 0.307 +3 1795 3618 4.47 1794 #94FFFF 40 Zr Zirconium Q1038 91.22 5 4 d Transition metal Solid [Kr]5s2 4d2 1.33 186 6.634 0.426 +4 2128 4682 6.52 1789 #94E0E0 41 Nb Niobium Q1046 92.90637 5 5 d Transition metal Solid [Kr]5s1 4d4 1.6 207 6.759 0.893 +5, +3 2750 5017 8.57 1801 #73C2C9 42 Mo Molybdenum Q1053 95.95 5 6 d Transition metal Solid [Kr]5s1 4d5 2.16 209 7.092 0.746 +6 2896 4912 10.2 1778 #54B5B5 43 Tc Technetium Q1054 96.90636 5 7 d Transition metal Solid [Kr]5s2 4d5 1.9 209 7.28 0.55 +7, +6, +4 2430 4538 11 1937 #3B9E9E 44 Ru Ruthenium Q1086 101.1 5 8 d Transition metal Solid [Kr]5s1 4d7 2.2 207 7.361 1.05 +3 2607 4423 12.1 1827 #248F8F 45 Rh Rhodium Q1087 102.9055 5 9 d Transition metal Solid [Kr]5s1 4d8 2.28 195 7.459 1.137 +3 2237 3968 12.4 1803 #0A7D8C 46 Pd Palladium Q1089 106.42 5 10 d Transition metal Solid [Kr]4d10 2.2 202 8.337 0.557 +3, +2 1828.05 3236 12 1803 #6985 47 Ag Silver Q1090 107.868 5 11 d Transition metal Solid [Kr]5s1 4d10 1.93 172 7.576 1.302 +1 1234.93 2435 10.501 Ancient #C0C0C0 48 Cd Cadmium Q1091 112.41 5 12 d Transition metal Solid [Kr]5s2 4d10 1.69 158 8.994 +2 594.22 1040 8.69 1817 #FFD98F 49 In Indium Q1094 114.818 5 13 p Post-transition metal Solid [Kr]5s2 4d10 5p1 1.78 193 5.786 0.3 +3 429.75 2345 7.31 1863 #A67573 50 Sn Tin Q1096 118.71 5 14 p Post-transition metal Solid [Kr]5s2 4d10 5p2 1.96 217 7.344 1.2 +4, +2 505.08 2875 7.287 Ancient #668080 51 Sb Antimony Q1099 121.76 5 15 p Metalloid Solid [Kr]5s2 4d10 5p3 2.05 206 8.64 1.07 +5, +3, -3 903.78 1860 6.685 Ancient #9E63B5 52 Te Tellurium Q1100 127.6 5 16 p Metalloid Solid [Kr]5s2 4d10 5p4 2.1 206 9.01 1.971 +6, +4, -2 722.66 1261 6.232 1782 #D47A00 53 I Iodine Q1103 126.9045 5 17 p Halogen Solid [Kr]5s2 4d10 5p5 2.66 198 10.451 3.059 +7, +5, +1, -1 386.85 457.55 4.93 1811 #940094 54 Xe Xenon Q1106 131.29 5 18 p Noble gas Gas [Kr]5s2 4d10 5p6 2.6 216 12.13 0 161.36 165.03 0.005887 1898 #429EB0 55 Cs Cesium Q1108 132.905452 6 1 s Alkali metal Solid [Xe]6s1 0.79 343 3.894 0.472 +1 301.59 944 1.93 1860 #57178F 56 Ba Barium Q1112 137.33 6 2 s Alkaline earth metal Solid [Xe]6s2 0.89 268 5.212 +2 1000 2170 3.62 1808 #00C900 57 La Lanthanum Q1801 138.9055 6 f Lanthanide Solid [Xe]6s2 5d1 1.1 240 5.577 0.5 +3 1191 3737 6.15 1839 #70D4FF 58 Ce Cerium Q1385 140.116 6 f Lanthanide Solid [Xe]6s2 4f1 5d1 1.12 235 5.539 0.5 +4, +3 1071 3697 6.77 1803 #FFFFC7 59 Pr Praseodymium Q1386 140.90766 6 f Lanthanide Solid [Xe]6s2 4f3 1.13 239 5.464 +3 1204 3793 6.77 1885 #D9FFC7 60 Nd Neodymium Q1388 144.24 6 f Lanthanide Solid [Xe]6s2 4f4 1.14 229 5.525 +3 1294 3347 7.01 1885 #C7FFC7 61 Pm Promethium Q1809 144.91276 6 f Lanthanide Solid [Xe]6s2 4f5 236 5.55 +3 1315 3273 7.26 1945 #A3FFC7 62 Sm Samarium Q1819 150.4 6 f Lanthanide Solid [Xe]6s2 4f6 1.17 229 5.644 +3, +2 1347 2067 7.52 1879 #8FFFC7 63 Eu Europium Q1396 151.964 6 f Lanthanide Solid [Xe]6s2 4f7 233 5.67 +3, +2 1095 1802 5.24 1901 #61FFC7 64 Gd Gadolinium Q1832 157.25 6 f Lanthanide Solid [Xe]6s2 4f7 5d1 1.2 237 6.15 +3 1586 3546 7.9 1880 #45FFC7 65 Tb Terbium Q1838 158.92535 6 f Lanthanide Solid [Xe]6s2 4f9 221 5.864 +3 1629 3503 8.23 1843 #30FFC7 66 Dy Dysprosium Q1843 162.5 6 f Lanthanide Solid [Xe]6s2 4f10 1.22 229 5.939 +3 1685 2840 8.55 1886 #1FFFC7 67 Ho Holmium Q1846 164.93033 6 f Lanthanide Solid [Xe]6s2 4f11 1.23 216 6.022 +3 1747 2973 8.8 1878 #00FF9C 68 Er Erbium Q1849 167.26 6 f Lanthanide Solid [Xe]6s2 4f12 1.24 235 6.108 +3 1802 3141 9.07 1843 69 Tm Thulium Q1853 168.93422 6 f Lanthanide Solid [Xe]6s2 4f13 1.25 227 6.184 +3 1818 2223 9.32 1879 #00D452 70 Yb Ytterbium Q1855 173.05 6 f Lanthanide Solid [Xe]6s2 4f14 242 6.254 +3, +2 1092 1469 6.9 1878 #00BF38 71 Lu Lutetium Q1857 174.9667 6 f Lanthanide Solid [Xe]6s2 4f14 5d1 1.27 221 5.426 +3 1936 3675 9.84 1907 #00AB24 72 Hf Hafnium Q1119 178.49 6 4 d Transition metal Solid [Xe]6s2 4f14 5d2 1.3 212 6.825 +4 2506 4876 13.3 1923 #4DC2FF 73 Ta Tantalum Q1123 180.9479 6 5 d Transition metal Solid [Xe]6s2 4f14 5d3 1.5 217 7.89 0.322 +5 3290 5731 16.4 1802 #4DA6FF 74 W Tungsten Q743 183.84 6 6 d Transition metal Solid [Xe]6s2 4f14 5d4 2.36 210 7.98 0.815 +6 3695 5828 19.3 1783 #2194D6 75 Re Rhenium Q737 186.207 6 7 d Transition metal Solid [Xe]6s2 4f14 5d5 1.9 217 7.88 0.15 +7, +6, +4 3459 5869 20.8 1925 #267DAB 76 Os Osmium Q751 190.2 6 8 d Transition metal Solid [Xe]6s2 4f14 5d6 2.2 216 8.7 1.1 +4, +3 3306 5285 22.57 1803 #266696 77 Ir Iridium Q877 192.22 6 9 d Transition metal Solid [Xe]6s2 4f14 5d7 2.2 202 9.1 1.565 +4, +3 2719 4701 22.42 1803 #175487 78 Pt Platinum Q880 195.08 6 10 d Transition metal Solid [Xe]6s1 4f14 5d9 2.28 209 9 2.128 +4, +2 2041.55 4098 21.46 1735 #D0D0E0 79 Au Gold Q897 196.96657 6 11 d Transition metal Solid [Xe]6s1 4f14 5d10 2.54 166 9.226 2.309 +3, +1 1337.33 3129 19.282 Ancient #FFD123 80 Hg Mercury Q925 200.59 6 12 d Transition metal Liquid [Xe]6s2 4f14 5d10 2 209 10.438 +2, +1 234.32 629.88 13.5336 Ancient #B8B8D0 81 Tl Thallium Q932 204.383 6 13 p Post-transition metal Solid [Xe]6s2 4f14 5d10 6p1 1.62 196 6.108 0.2 +3, +1 577 1746 11.8 1861 #A6544D 82 Pb Lead Q708 207 6 14 p Post-transition metal Solid [Xe]6s2 4f14 5d10 6p2 2.33 202 7.417 0.36 +4, +2 600.61 2022 11.342 Ancient #575961 83 Bi Bismuth Q942 208.9804 6 15 p Post-transition metal Solid [Xe]6s2 4f14 5d10 6p3 2.02 207 7.289 0.946 +5, +3 544.55 1837 9.807 1753 #9E4FB5 84 Po Polonium Q979 208.98243 6 16 p Metalloid Solid [Xe]6s2 4f14 5d10 6p4 2 197 8.417 1.9 +4, +2 527 1235 9.32 1898 #AB5C00 85 At Astatine Q999 209.98715 6 17 p Halogen Solid [Xe]6s2 4f14 5d10 6p5 2.2 202 9.5 2.8 7, 5, 3, 1, -1 575 7 1940 #754F45 86 Rn Radon Q1133 222.01758 6 18 p Noble gas Gas [Xe]6s2 4f14 5d10 6p6 220 10.745 0 202 211.45 0.00973 1900 #428296 87 Fr Francium Q671 223.01973 7 1 s Alkali metal Solid [Rn]7s1 0.7 348 3.9 0.47 +1 300 1939 #420066 88 Ra Radium Q1128 226.02541 7 2 s Alkaline earth metal Solid [Rn]7s2 0.9 283 5.279 +2 973 1413 5 1898 #007D00 89 Ac Actinium Q1121 227.02775 7 f Actinide Solid [Rn]7s2 6d1 1.1 260 5.17 +3 1324 3471 10.07 1899 #70ABFA 90 Th Thorium Q1115 232.038 7 f Actinide Solid [Rn]7s2 6d2 1.3 237 6.08 +4 2023 5061 11.72 1828 #00BAFF 91 Pa Protactinium Q1109 231.03588 7 f Actinide Solid [Rn]7s2 5f2 6d1 1.5 243 5.89 +5, +4 1845 15.37 1913 #00A1FF 92 U Uranium Q1098 238.0289 7 f Actinide Solid [Rn]7s2 5f3 6d1 1.38 240 6.194 +6, +5, +4, +3 1408 4404 18.95 1789 #008FFF 93 Np Neptunium Q1105 237.048172 7 f Actinide Solid [Rn]7s2 5f4 6d1 1.36 221 6.266 +6, +5, +4, +3 917 4175 20.25 1940 #0080FF 94 Pu Plutonium Q1102 244.0642 7 f Actinide Solid [Rn]7s2 5f6 1.28 243 6.06 +6, +5, +4, +3 913 3501 19.84 1940 #006BFF 95 Am Americium Q1872 243.06138 7 f Actinide Solid [Rn]7s2 5f7 1.3 244 5.993 +6, +5, +4, +3 1449 2284 13.69 1944 #545CF2 96 Cm Curium Q1876 247.07035 7 f Actinide Solid [Rn]7s2 5f7 6d1 1.3 245 6.02 +3 1618 3400 13.51 1944 #785CE3 97 Bk Berkelium Q1882 247.07031 7 f Actinide Solid [Rn]7s2 5f9 1.3 244 6.23 +4, +3 1323 14 1949 #8A4FE3 98 Cf Californium Q1888 251.07959 7 f Actinide Solid [Rn]7s2 5f10 1.3 245 6.3 +3 1173 1950 #A136D4 99 Es Einsteinium Q1892 252.083 7 f Actinide Solid [Rn]7s2 5f11 1.3 245 6.42 +3 1133 1952 #B31FD4 100 Fm Fermium Q1896 257.09511 7 f Actinide Solid [Rn] 5f12 7s2 1.3 6.5 +3 1800 1952 #B31FBA 101 Md Mendelevium Q1898 258.09843 7 f Actinide Solid [Rn]7s2 5f13 1.3 6.58 +3, +2 1100 1955 #B30DA6 102 No Nobelium Q1901 259.101 7 f Actinide Solid [Rn]7s2 5f14 1.3 6.65 +3, +2 1100 1957 #BD0D87 103 Lr Lawrencium Q1905 266.12 7 f Actinide Solid [Rn]7s2 5f14 6d1 1.3 +3 1900 1961 #C70066 104 Rf Rutherfordium Q1226 267.122 7 4 d Transition metal Solid [Rn]7s2 5f14 6d2 +4 1964 #CC0059 105 Db Dubnium Q1232 268.126 7 5 d Transition metal Solid [Rn]7s2 5f14 6d3 5, 4, 3 1967 #D1004F 106 Sg Seaborgium Q1234 269.128 7 6 d Transition metal Solid [Rn]7s2 5f14 6d4 6, 5, 4, 3, 0 1974 #D90045 107 Bh Bohrium Q1249 270.133 7 7 d Transition metal Solid [Rn]7s2 5f14 6d5 7, 5, 4, 3 1976 #E00038 108 Hs Hassium Q1252 269.1336 7 8 d Transition metal Solid [Rn]7s2 5f14 6d6 8, 6, 5, 4, 3, 2 1984 #E6002E 109 Mt Meitnerium Q1258 277.154 7 9 d Transition metal Solid [Rn]7s2 5f14 6d7 (calculated) 9, 8, 6, 4, 3, 1 1982 #EB0026 110 Ds Darmstadtium Q1266 282.166 7 10 d Transition metal Expected to be a Solid [Rn]7s2 5f14 6d8 (predicted) 8, 6, 4, 2, 0 1994 111 Rg Roentgenium Q1272 282.169 7 11 d Transition metal Expected to be a Solid [Rn]7s2 5f14 6d9 (predicted) 5, 3, 1, -1 1994 112 Cn Copernicium Q1278 286.179 7 12 d Transition metal Expected to be a Solid [Rn]7s2 5f14 6d10 (predicted) 2, 1, 0 1996 113 Nh Nihonium Q1301 286.182 7 13 p Post-transition metal Expected to be a Solid [Rn]5f14 6d10 7s2 7p1 (predicted) 2004 114 Fl Flerovium Q1302 290.192 7 14 p Post-transition metal Expected to be a Solid [Rn]7s2 7p2 5f14 6d10 (predicted) 6, 4,2, 1, 0 1998 115 Mc Moscovium Q1303 290.196 7 15 p Post-transition metal Expected to be a Solid [Rn]7s2 7p3 5f14 6d10 (predicted) 3, 1 2003 116 Lv Livermorium Q1304 293.205 7 16 p Post-transition metal Expected to be a Solid [Rn]7s2 7p4 5f14 6d10 (predicted) +4, +2, -2 2000 117 Ts Tennessine Q1306 294.211 7 17 p Halogen Expected to be a Solid [Rn]7s2 7p5 5f14 6d10 (predicted) +5, +3, +1, -1 2010 118 Og Oganesson Q1307 295.216 7 18 p Noble gas Expected to be a Gas [Rn]7s2 7p6 5f14 6d10 (predicted) +6, +4, +2, +1, 0, -1 2006