1 Hydrogen H 1 1.00794 s 1 1766 1 -73 2.1 13.81 20.28 0.084 13.598 37.3 25 120 74.130 208 1s1 +1.(-1) Non-Metal 1520 2 Helium He 1 4.002602 p 1 1895 0 8 21 0.95 4.216 0.1785 24.587 54.417 32 31 140 300 1s2 0 Noblegas hcp 3 Lithium Li 2 6.941 s 0 1817 5 1 -60 0.98 453.7 1615 0.53 5.392 75.980 134 145 182 303.9 74 1s2 2s1 +1 Alkali_Earth bcc 18 4 Beryllium Be 2 9.012182 s 2 0 1798 3 2 19 1.57 1560 3243 1.85 9.322 18.211 90 105 222.6 35 1s2 2s2 +2 Alkaline_Earth hdp 2 5 Boron B 2 10.811 p 3 1808 3 3 -27 2.04 2365 4275 2.46 8.298 25.154 37.9 82 85 158.9 23 9 1s2 2s2 2p1 +3 Metalloids rh 6 Carbon C 2 12.0107 p 3 0 1 4 -122 2.55 3825 5100 3.51 11.260 24.376 77.2 70 170 142.6 16 180 1s2 2s2 2p2 -4.+2.+4 Non-Metal 7 Nitrogen N 2 14.0067 p 3 1772 1 5 7 3.04 63.15 77.344 1.17 14.534 29.602 75 65 155 13 16 16 109.76 19 1s2 2s2 2p3 -3.(+1.+2.+3.+4.+5) Non-Metal hcp 8 Oxygen O 2 15.9994 p 3 1774 1 6 -141 3.44 54.8 90.188 1.33 13.618 35.116 73 60 152 146 120.741 455000 1s2 2s2 2p4 -2.(-1.+2) Non-Metal sc 9 Fluorine F 2 18.9984032 p 3 1886 4 7 -328 3.98 53.55 85.0 1.58 17.422 34.969 70.9 50 147 141.8 131 544 1s2 2s2 2p5 -1 Halogene 10 Neon Ne 2 20.1797 p 1 1898 0 8 29 24.55 27.10 0.8999 21.564 40.962 69 38 154 313 1s2 2s2 2p6 0 Noblegas ccp 11 Sodium Na 3 22.989770 s 0 1807 2 1 -53 0.93 371.0 1156 0.97 5.139 153.7 180 227 102 371.7 22700 1s2 2s2 2p6 3s1 +1 Alkali_Earth bcc 12 Magnesium Mg 3 24.3050 s 0 1808 1 2 19 1.31 922 1380 1.74 7.646 15.0 80.1 130 150 173 319.7 72 27640 1s2 2s2 2p6 3s2 +2 Alkaline_Earth hdp 13 Aluminum Al 3 26.981538 p 2 1825 0 3 -43 1.61 933.5 2740 2.70 5.986 18.8 28.4 118 125 53 286.3 83000 1s2 2s2 2p6 3s2 3p1 +3 Other_Metal ccp 14 Silicon Si 3 28.0855 p 3 1823 4 4 -134 1.91 1683 2630 2.33 8.151 16.3 33.4 111 110 210 235.2 40 272200 1s2 2s2 2p6 3s2 3p2 +4.(-4.+2) Metalloids d 15 Phosphorus P 3 30.973761 p 3 1669 1 5 -72 2.19 317.3 553 1.82 10.486 19.8 30.2 106 100 180 35 44 221 1120 1s2 2s2 2p6 3s2 3p3 -3.(+1.+3).+5 Non-Metal sc 16 Sulfur S 3 32.065 p 3 0 1 6 -200 2.58 392.2 717.82 2.06 10.360 23.3 34.8 102 100 180 184 205 340 1s2 2s2 2p6 3s2 3p4 -2.+2.+4.+6 Non-Metal or 17 Chlorine Cl 3 35.453 p 3 1774 2 7 -349 3.16 172.17 239.18 2.95 12.967 23.8 39.6 99.4 100 175 189.1 181 126 1s2 2s2 2p6 3s2 3p5 -1.(+1.+3.+5.+7) Halogene tet 18 Argon Ar 3 39.948 p 1 1894 0 8 29 83.95 87.45 1.66 15.759 27.6 40.7 97 71 188 372 1s2 2s2 2p6 3s2 3p6 0 Noblegas tet 19 Potassium K 4 39.0983 s 0 1807 1 1 -48 0.82 336.8 1033 0.86 4.341 196 220 275 Ar 4s1 +1 Alkali_Earth bcc 20 Calcium Ca 4 40.078 s 0 1808 1 2 10 1.00 1112 1757 1.54 6.113 11.9 174 180 Ar 4s2 +2 Alkaline_Earth ccp 21 Scandium Sc 4 44.955910 d 0 1879 0 3 -18 1.36 1814 3109 2.99 6.54 144 160.6 Ar 3d1 4s2 +3 Transition hdp 22 Titanium Ti 4 47.867 d 2 1791 0 4 -8 1.54 1935 3560 4.51 6.82 144.8 140 Ar 3d2 4s2 +4.+3 Transition hdp 23 Vanadium V 4 50.9415 d 2 1830 4 5 -51 1.63 2163 3650 6.09 6.74 125 135 Ar 3d3 4s2 +5.(+2.+3.+4) Transition bcc 24 Chromium Cr 4 51.9961 d 2 1797 4 6 -64 1.66 2130 2945 7.14 6.766 124.9 140 Ar 3d5 4s1 +2.+3.(+1.+4.+5).+6 Transition bcc 25 Manganese Mn 4 54.938049 d 2 1774 1 7 1.55 1518 2235 7.44 7.435 139 140 Ar 3d5 4s2 +2.+4.(+5).+6.+7 Transition own 26 Iron Fe 4 55.845 d 2 0 1 8 -16 1.83 1808 3023 7.874 7.870 124.1 140 Ar 3d6 4s2 +2.+3 Transition bcc 27 Cobalt Co 4 58.933200 d 2 1737 2 8 -64 1.88 1768 3143 8.89 7.86 125.3 135 Ar 3d7 4s2 +2.+3.(+4) Transition hdp 28 Nickel Ni 4 58.6934 d 0 1751 4 8 -112 1.91 1726 3005 8.91 7.635 124.6 135 163 Ar 3d8 4s2 0.(+2).+3 Transition ccp 29 Copper Cu 4 63.546 d 0 0 1 1 -118 1.90 1356.6 2840 8.92 7.726 19.579 35.55 138 135 140 Ar 3d10 4s1 +1.+2 Transition ccp 30 Zinc Zn 4 65.39 d 2 1746 1 2 47 1.65 692.73 1180 7.14 9.394 131 133.2 139 Ar 3d10 4s2 +2 Transition hdp 31 Gallium Ga 4 69.723 p 2 1875 0 3 -29 1.81 302.92 2478 5.91 5.999 20.5 30.7 126 130 187 Ar 3d10 4s2 4p1 (+1).(+2).+3 Other_Metal own 32 Germanium Ge 4 72.64 p 2 1886 0 4 -116 2.01 1211.5 3107 5.32 7.899 122.5 125 Ar 3d10 4s2 4p2 +4.(+2) Metalloids d 33 Arsenic As 4 74.92160 p 2 0 4 5 -78 2.18 1090 876 5.72 9.81 119 115 185 46 Ar 3d10 4s2 4p3 (-3).+3.(+5) Metalloids rh 34 Selenium Se 4 78.96 p 3 1817 2 6 -195 2.55 494 958 4.82 9.752 116 115 190 202 Ar 3d10 4s2 4p4 (-2).+4.(+6) Non-Metal hcp 35 Bromine Br 4 79.904 p 3 1826 5 7 -325 2.96 265.95 331.85 3.14 11.814 114.5 115 185 Ar 3d10 4s2 4p5 -1.(+1.+5.+7) Halogene or 36 Krypton Kr 4 83.80 p 1 1898 0 8 39 116 120.85 4.48 13.999 110 88 202 Ar 3d10 4s2 4p6 +2.(+4) Noblegas ccp 37 Rubidium Rb 5 85.4678 s 0 1861 5 1 -47 0.82 312.63 961 1.53 4.177 211 235 Kr 5s1 +1 Alkali_Earth bcc 38 Strontium Sr 5 87.62 s 0 1790 3 2 0.95 1042 1655 2.63 5.695 11.0 211 235 Kr 5s2 +2 Alkaline_Earth ccp 39 Yttrium Y 5 88.90585 d 0 1794 0 3 -30 1.22 1795 3611 4.47 6.38 162 180 Kr 4d1 5s2 +3 Transition hdp 40 Zirconium Zr 5 91.224 d 2 1789 0 4 -41 1.33 2128 4682 6.51 6.84 148 155 Kr 4d2 5s2 +4 Transition hdp 41 Niobium Nb 5 92.90638 d 2 1801 0 5 -86 1.6 2742 5015 8.58 6.88 137 145 Kr 4d4 5s1 +3.+5 Transition bcc 42 Molybdenum Mo 5 95.94 d 2 1778 1 6 -72 2.16 2896 4912 10.28 7.099 145 145 Kr 4d5 5s1 (+2.+3.+4.+5).+6 Transition bcc 43 Technetium Tc 5 98.9063 d 2 1 1 1937 0 7 -53 1.9 2477 4538 11.49 7.28 156 135 Kr 4d6 5s1 +7 Transition hdp 44 Ruthenium Ru 5 101.07 d 2 1844 0 8 -101 2.2 2610 4425 12.45 7.37 126 130 Kr 4d7 5s1 +3.+4.(+8) Transition hdp 45 Rhodium Rh 5 102.90550 d 0 1803 0 8 -110 2.28 2236 3970 12.41 7.46 135 134.5 Kr 4d8 5s1 +1.(+2).+3.(+4) Transition ccp 46 Palladium Pd 5 106.42 d 0 1803 0 8 -54 2.20 1825 3240 12.02 8.34 131 140 163 Kr 4d10 +2.+4 Transition ccp 47 Silver Ag 5 107.8682 d 0 0 0 1 -126 1.93 1235.1 2436 10.49 7.576 153 160 172 Kr 4d10 5s1 +1.(+2.+3) Transition ccp 48 Cadmium Cd 5 112.411 d 0 1817 5 2 32 1.69 594.26 1040 8.64 8.993 148.9 155 158 Kr 4d10 5s2 +2 Transition hdp 49 Indium In 5 114.818 p 2 1863 0 3 -29 1.78 429.78 2350 7.31 5.786 18.9 28.0 144 155 193 Kr 4d10 5s2 5p1 +3.(+1.+2) Other_Metal ccp 50 Tin Sn 5 118.710 p 2 0 6 4 -116 1.96 505.12 2876 7.29 7.344 140.5 145 217 Kr 4d10 5s2 5p2 +2.+4 Other_Metal own 51 Antimony Sb 5 121.760 p 2 0 0 5 -103 2.05 903.91 1860 6.69 8.641 138 145 62 Kr 4d10 5s2 5p3 (-3).+3.(+5) Metalloids rh 52 Tellurium Te 5 127.60 p 2 1782 0 6 -190 2.1 722.72 1261 6.25 9.009 135 140 206 222 Kr 4d10 5s2 5p4 (-2).+4.(+6) Metalloids hcp 53 Iodine I 5 126.90447 p 3 1811 2 7 -295 2.66 386.7 457.5 4.94 10.451 133.1 140 198 Kr 4d10 5s2 5p5 -1.(+1.+3.+5.+7) Halogene or 54 Xenon Xe 5 131.293 p 1 1898 0 8 41 161.39 165.1 4.49 12.130 130 108 216 Kr 4d10 5s2 5p6 +4.(+2.+6) Noblegas 55 Caesium Cs 6 132.90545 s 0 1860 0 1 -45 0.79 301.54 944 1.90 3.894 235 265.4 Xe 6s1 +1 Alkali_Earth bcc 56 Barium Ba 6 137.237 s 0 1808 3 2 0.89 1002 2078 3.65 5.212 10.0 198 217.3 Xe 6s2 +2 Alkaline_Earth bcc 57 Lanthanum La 6 138.9055 f 0 1839 0 3 1.10 1191 3737 6.16 5.577 11.0 19.17 49.9 61.6 169 187.0 Xe 5d1 6s2 +3 Rare_Earth hcp 58 Cerium Ce 6 140.116 f 0 1803 0 4 1.12 1071 3715 6.77 5.47 10.9 20.2 36.8 65.5 165 182.5 Xe 4f1 5d1 6s2 +3.+4 Rare_Earth ccp 59 Praseodymium Pr 6 140.90765 f 0 1885 0 5 1.13 1204 3785 6.48 5.42 10.6 21.6 165 182.8 Xe 4f3 6s2 +3.+4 Rare_Earth 60 Neodymium Nd 6 144.24 f 0 1885 0 6 1.14 1294 3347 7.00 5.49 164 182.1 Xe 4f4 6s2 +3 Rare_Earth 61 Promethium Pm 6 146.9151 f 0 1 1945 0 7 1.13 1315 3273 7.22 5.55 163 181.0 Xe 4f5 6s2 +3 Rare_Earth 62 Samarium Sm 6 150.36 f 0 1879 0 8 1.17 1347 2067 7.54 5.63 166 180.2 Xe 4f6 6s2 +2.+3 Rare_Earth 63 Europium Eu 6 151.964 f 0 1901 0 8 1.2 1095 1800 5.25 5.67 185 204.2 Xe 4f7 6s2 +2.+3 Rare_Earth bcc 64 Gadolinium Gd 6 157.25 f 0 1880 0 8 1.20 1585 3545 7.89 6.14 161 180.2 Xe 4f7 5d1 6s2 +3 Rare_Earth hdp 65 Terbium Tb 6 158.92534 f 0 1843 0 1 1.1 1629 3500 8.25 5.85 159 178.2 Xe 4f9 6s2 +3.+4 Rare_Earth hdp 66 Dysprosium Dy 6 162.50 f 0 1886 0 2 1.22 1685 2840 8.56 5.93 159 177.3 Xe 4f10 6s2 +3 Rare_Earth hdp 67 Holmium Ho 6 164.93032 f 0 1878 0 3 1.23 1747 2968 8.78 6.02 158 176.6 Xe 4f11 6s2 +3 Rare_Earth hdp 68 Erbium Er 6 167.259 f 0 1843 0 4 1.24 1802 3140 9.05 6.10 157 175.7 Xe 4f12 6s2 +3 Rare_Earth hdp 69 Thulium Tm 6 168.93421 f 0 1879 0 5 1.25 1818 2223 9.32 6.18 156 174.6 Xe 4f13 6s2 +2.+3 Rare_Earth hdp 70 Ytterbium Yb 6 173.04 f 0 1878 0 6 1.1 1092 1469 9.32 6.254 170 194 Xe 4f14 6s2 +2.+3 Rare_Earth ccp 71 Lutetium Lu 6 174.967 f 0 1907 0 7 1.27 1936 3668 9.84 5.426 156 173.4 Xe 4f14 5d1 6s2 +3 Rare_Earth hdp 72 Hafnium Hf 6 178.49 d 2 1923 0 4 1.3 2504 4875 13.31 7.0 144 156.4 Xe 4f14 5d2 6s2 +5 Transition hdp 73 Tantalum Ta 6 180.9479 d 2 1802 0 5 -31 1.5 3293 5730 16.68 7.89 134 143 Xe 4f14 5d3 6s2 +3.+5 Transition bcc 74 Tungsten W 6 183.84 d 2 1783 5 6 -79 2.36 3695 5825 19.26 7.98 130 137 Xe 4f14 5d4 6s2 (+4). +6 Transition bcc 75 Rhenium Re 6 186.207 d 2 1925 0 7 -14 1.9 3455 5870 21.03 7.88 159 135 274.1 63 0.0007 Xe 4f14 5d5 6s2 +7.+2.+4 Transition hdp 76 Osmium Os 6 190.23 d 2 1804 0 8 -106 2.2 3300 5300 22.61 8.7 128 130 267.5 63 0.005 Xe 4f14 5d6 6s2 +4.(+2.+3.+6.+8) Transition hdp 77 Iridium Ir 6 192.217 d 0 1804 0 8 -151 2.20 2720 4700 22.65 9.1 137 135 271.4 63 0.001 Xe 4f14 5d7 6s2 +1.+4.(+2.+3.+6) Transition ccp 78 Platinum Pt 6 195.078 d 0 1735 0 8 -205 2.28 2042.1 4100 21.450 9.0 128 135 175 277.5 80 0.01 Xe 4f14 5d9 6s1 +2.+4 Transition ccp 79 Gold Au 6 196.96654 d 0 0 0 1 -223 2.54 1337.58 3130 19.32 9.225 144.2 135 166 288.4 137 0.004 Xe 4f14 5d10 6s1 (+1).+3 Transition ccp 80 Mercury Hg 6 200.59 d 0 0 0 2 61 2.00 234.31 629.88 13.55 10.437 160 150 155 300.5 102 0.08 Xe 4f14 5d10 6s2 (+1).+2 Transition ccp 81 Thallium Tl 6 204.3833 p 2 1861 0 3 -20 2.04 577 1746 11.85 6.108 20.4 29.8 170.4 190 196 150 340.8 0.7 Xe 4f14 5d10 6s2 6p1 +1.(+3) Other_Metal hdp 82 Lead Pb 6 207.2 p 2 0 3 4 -35 2.33 600.65 2023 11.34 7.416 147 180 202 350.0 118 13 Xe 4f14 5d10 6s2 6p2 +2.(+4) Other_Metal ccp 83 Bismuth Bi 6 208.98038 p 0 0 0 5 -91 2.02 544.59 1837 9.80 7.289 155 160 74 102 309 13 Xe 4f14 5d10 6s2 6p3 +3.(+5) Other_Metal rh 84 Polonium Po 6 208.9824 p 2 1 1898 0 6 -183 2.0 527 9.20 8.42 167.5 190 334.5 97 0 Xe 4f14 5d10 6s2 6p4 (+2).+4.(+6) Metalloids mono 85 Astatine At 6 209.9871 p 3 1 1940 0 7 -270 2.2 575 610 9.5 127 0 Xe 4f14 5d10 6s2 6p5 -1.(1.3.5.7) Halogene 86 Radon Rn 6 222.0176 p 1 1 1898 0 8 41 202 211.4 9.23 10.748 145 120 0 Xe 4f14 5d10 6s2 6p6 2 Noblegas ccp 87 Francium Fr 7 223.0197 s 0 1 1939 0 1 -44 0.7 300 950 4.0 270 180 Rn 7s1 +1 Alkali_Earth 88 Radium Ra 7 226.0254 s 0 1 1898 0 2 0.89 973 1413 5.50 5.279 223 215 143 445.8 0 Rn 7s2 +2 Alkaline_Earth bcc 89 Actinium Ac 7 227.0278 f 0 1 1899 0 3 1.1 1324 3470 10.07 6.9 187.8 195 118 375.6 0 Rn 6d1 7s2 (+2).+3 Rare_Earth ccp 90 Thorium Th 7 232.0381 f 0 1 1828 0 4 1.3 2028 5060 11.72 6.95 179.8 100 359.5 12 +3.+4 Rare_Earth Rn 6d2 7s2 ccp 91 Protactinium Pa 7 231.03588 f 0 1 1917 0 5 1.5 1845 4300 15.37 180.6 98 89 113 321.2 12 +4.+5 Rare_Earth Rn 5f2 6d1 7s2 own 92 Uranium U 7 238.02891 f 0 1 1789 0 6 1.38 1408 4407 18.97 6.08 138.5 175 186 97 80 73 277 2.3 +3.+4.+5.+6.+7 Rare_Earth Rn 5f3 6d1 7s2 own 93 Neptunium Np 7 237.0482 f 0 1 1940 0 7 1.36 912 4175 20.48 131 175 95 262 0 +4.+3.+5.+7 Rare_Earth Rn 5f4 6d1 7s2 own 94 Plutonium Pu 7 244.0642 f 0 1 1940 0 8 1.28 913 3505 19.74 5.8 151 175 80 302.6 0 +3.+4.+5.+6.+7 Rare_Earth Rn 5f6 7s2 own 95 Americium Am 7 243.0614 f 0 1 1 1945 0 8 1.3 1449 2880 13.67 6.0 184 175 100 345.0 0 +2.+3.+4.+5.+6 Rare_Earth Rn 5f7 7s2 96 Curium Cm 7 247.0703 f 0 1 1 1944 0 8 1.3 98 347.7 0 1620 13.51 +3.+4 Rare_Earth Rn 5f7 6d1 7s2 97 Berkelium Bk 7 247.0703 f 0 1 1 98 339.8 0 1949 0 1 1.3 1258 13.25 +3.+4 Rare_Earth Rn 5f9 7s2 98 Californium Cf 7 251.0796 f 0 1 1 1950 0 2 98 337.7 0 1.3 1172 15.1 +3.+4 Rare_Earth Rn 5f10 7s2 99 Einsteinium Es 7 252.0829 f 0 1 1 1952 0 3 186 98 0 1.3 1130 +2.+3.+4 Rare_Earth Rn 5f11 7s2 100 Fermium Fm 7 257.0951 f 0 1 1 1953 0 4 190 97 0 1.3 1800 +2.+3 Rare_Earth Rn 5f12 7s2 101 Mendelevium Md 7 258.0986 f 0 1 1 1955 0 5 96 0 1.3 1100 +2.+3 Rare_Earth Rn 5f13 7s2 102 Nobelium No 7 259.1009 f 113 0 0 1 1 1958 0 6 1.3 1100 +2.+3.+4 Rare_Earth Rn 5f14 7s2 103 Lawrencium Lr 7 262.110 f 0 1 1 1961 0 7 1.3 1900 94 0 +3 Rare_Earth Rn 5f14 7s2 7p1 104 Rutherfordium Rf 7 261.1089 d 2 1 1 1964 0 4 0 +3 Transition Rn 5f14 6d2 7s2 105 Dubnium Db 7 262.1144 d 2 1 1 1967 0 5 0 Rn 5f14 6d3 7s2 Transition 106 Seaborgium Sg 7 263.1186 d 2 1 1 1974 0 0 6 Transition 107 Bohrium Bh 7 262.1231 d 2 1 1 1981 0 0 7 Transition 108 Hassium Hs 7 265.1306 d 2 1 1 1984 0 0 8 Transition 109 Meitnerium Mt 7 266.1378 d 0 1 1 1982 0 0 8 Transition 110 Darmstadtium Ds 7 271 d 0 1 1 1994 0 0 8 Transition 111 Roentgenium Rg 7 272 d 0 1 1 1994 0 0 1 Transition