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AtomicNumber | Element | Symbol | AtomicMass | NumberofNeutrons | NumberofProtons | NumberofElectrons | Period | Group | Phase | Radioactive | Natural | Metal | Nonmetal | Metalloid | Type | AtomicRadius | Electronegativity | FirstIonization | Density | MeltingPoint | BoilingPoint | NumberOfIsotopes | Discoverer | Year | SpecificHeat | NumberofShells | NumberofValence | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Hydrogen | H | 1.007 | 0 | 1 | 1 | 1 | 1 | gas | yes | yes | Nonmetal | 0.79 | 2.2 | 13.5984 | 8.99E-05 | 14.175 | 20.28 | 3 | Cavendish | 1766 | 14.304 | 1 | 1 | ||||
2 | Helium | He | 4.002 | 2 | 2 | 2 | 1 | 18 | gas | yes | yes | Noble Gas | 0.49 | 24.5874 | 1.79E-04 | 4.22 | 5 | Janssen | 1868 | 5.193 | 1 | |||||||
3 | Lithium | Li | 6.941 | 4 | 3 | 3 | 2 | 1 | solid | yes | yes | Alkali Metal | 2.1 | 0.98 | 5.3917 | 5.34E-01 | 453.85 | 1615 | 5 | Arfvedson | 1817 | 3.582 | 2 | 1 | ||||
4 | Beryllium | Be | 9.012 | 5 | 4 | 4 | 2 | 2 | solid | yes | yes | Alkaline Earth Metal | 1.4 | 1.57 | 9.3227 | 1.85E+00 | 1560.15 | 2742 | 6 | Vaulquelin | 1798 | 1.825 | 2 | 2 | ||||
5 | Boron | B | 10.811 | 6 | 5 | 5 | 2 | 13 | solid | yes | yes | Metalloid | 1.2 | 2.04 | 8.298 | 2.34E+00 | 2573.15 | 4200 | 6 | Gay-Lussac | 1808 | 1.026 | 2 | 3 | ||||
6 | Carbon | C | 12.011 | 6 | 6 | 6 | 2 | 14 | solid | yes | yes | Nonmetal | 0.91 | 2.55 | 11.2603 | 2.27E+00 | 3948.15 | 4300 | 7 | Prehistoric | 0.709 | 2 | 4 | |||||
7 | Nitrogen | N | 14.007 | 7 | 7 | 7 | 2 | 15 | gas | yes | yes | Nonmetal | 0.75 | 3.04 | 14.5341 | 1.25E-03 | 63.29 | 77.36 | 8 | Rutherford | 1772 | 1.04 | 2 | 5 | ||||
8 | Oxygen | O | 15.999 | 8 | 8 | 8 | 2 | 16 | gas | yes | yes | Nonmetal | 0.65 | 3.44 | 13.6181 | 1.43E-03 | 50.5 | 90.2 | 8 | Priestley/Scheele | 1774 | 0.918 | 2 | 6 | ||||
9 | Fluorine | F | 18.998 | 10 | 9 | 9 | 2 | 17 | gas | yes | yes | Halogen | 0.57 | 3.98 | 17.4228 | 1.70E-03 | 53.63 | 85.03 | 6 | Moissan | 1886 | 0.824 | 2 | 7 | ||||
10 | Neon | Ne | 20.18 | 10 | 10 | 10 | 2 | 18 | gas | yes | yes | Noble Gas | 0.51 | 21.5645 | 9.00E-04 | 24.703 | 27.07 | 8 | Ramsay and Travers | 1898 | 1.03 | 2 | 8 | |||||
11 | Sodium | Na | 22.99 | 12 | 11 | 11 | 3 | 1 | solid | yes | yes | Alkali Metal | 2.2 | 0.93 | 5.1391 | 9.71E-01 | 371.15 | 1156 | 7 | Davy | 1807 | 1.228 | 3 | 1 | ||||
12 | Magnesium | Mg | 24.305 | 12 | 12 | 12 | 3 | 2 | solid | yes | yes | Alkaline Earth Metal | 1.7 | 1.31 | 7.6462 | 1.74E+00 | 923.15 | 1363 | 8 | Black | 1755 | 1.023 | 3 | 2 | ||||
13 | Aluminum | Al | 26.982 | 14 | 13 | 13 | 3 | 13 | solid | yes | yes | Metal | 1.8 | 1.61 | 5.9858 | 2.70E+00 | 933.4 | 2792 | 8 | Wshler | 1827 | 0.897 | 3 | 3 | ||||
14 | Silicon | Si | 28.086 | 14 | 14 | 14 | 3 | 14 | solid | yes | yes | Metalloid | 1.5 | 1.9 | 8.1517 | 2.33E+00 | 1683.15 | 3538 | 8 | Berzelius | 1824 | 0.705 | 3 | 4 | ||||
15 | Phosphorus | P | 30.974 | 16 | 15 | 15 | 3 | 15 | solid | yes | yes | Nonmetal | 1.2 | 2.19 | 10.4867 | 1.82E+00 | 317.25 | 553 | 7 | BranBrand | 1669 | 0.769 | 3 | 5 | ||||
16 | Sulfur | S | 32.065 | 16 | 16 | 16 | 3 | 16 | solid | yes | yes | Nonmetal | 1.1 | 2.58 | 10.36 | 2.07E+00 | 388.51 | 717.8 | 10 | Prehistoric | 0.71 | 3 | 6 | |||||
17 | Chlorine | Cl | 35.453 | 18 | 17 | 17 | 3 | 17 | gas | yes | yes | Halogen | 0.97 | 3.16 | 12.9676 | 3.21E-03 | 172.31 | 239.11 | 11 | Scheele | 1774 | 0.479 | 3 | 7 | ||||
18 | Argon | Ar | 39.948 | 22 | 18 | 18 | 3 | 18 | gas | yes | yes | Noble Gas | 0.88 | 15.7596 | 1.78E-03 | 83.96 | 87.3 | 8 | Rayleigh and Ramsay | 1894 | 0.52 | 3 | 8 | |||||
19 | Potassium | K | 39.098 | 20 | 19 | 19 | 4 | 1 | solid | yes | yes | Alkali Metal | 2.8 | 0.82 | 4.3407 | 8.62E-01 | 336.5 | 1032 | 10 | Davy | 1807 | 0.757 | 4 | 1 | ||||
20 | Calcium | Ca | 40.078 | 20 | 20 | 20 | 4 | 2 | solid | yes | yes | Alkaline Earth Metal | 2.2 | 1 | 6.1132 | 1.54E+00 | 1112.15 | 1757 | 14 | Davy | 1808 | 0.647 | 4 | 2 | ||||
21 | Scandium | Sc | 44.956 | 24 | 21 | 21 | 4 | 3 | solid | yes | yes | Transition Metal | 2.1 | 1.36 | 6.5615 | 2.99E+00 | 1812.15 | 3109 | 15 | Nilson | 1878 | 0.568 | 4 | |||||
22 | Titanium | Ti | 47.867 | 26 | 22 | 22 | 4 | 4 | solid | yes | yes | Transition Metal | 2 | 1.54 | 6.8281 | 4.54E+00 | 1933.15 | 3560 | 9 | Gregor | 1791 | 0.523 | 4 | |||||
23 | Vanadium | V | 50.942 | 28 | 23 | 23 | 4 | 5 | solid | yes | yes | Transition Metal | 1.9 | 1.63 | 6.7462 | 6.11E+00 | 2175.15 | 3680 | 9 | del Rio | 1801 | 0.489 | 4 | |||||
24 | Chromium | Cr | 51.996 | 28 | 24 | 24 | 4 | 6 | solid | yes | yes | Transition Metal | 1.9 | 1.66 | 6.7665 | 7.15E+00 | 2130.15 | 2944 | 9 | Vauquelin | 1797 | 0.449 | 4 | |||||
25 | Manganese | Mn | 54.938 | 30 | 25 | 25 | 4 | 7 | solid | yes | yes | Transition Metal | 1.8 | 1.55 | 7.434 | 7.44E+00 | 1519.15 | 2334 | 11 | Gahn, Scheele | 1774 | 0.479 | 4 | |||||
26 | Iron | Fe | 55.845 | 30 | 26 | 26 | 4 | 8 | solid | yes | yes | Transition Metal | 1.7 | 1.83 | 7.9024 | 7.87E+00 | 1808.15 | 3134 | 10 | Prehistoric | 0.449 | 4 | ||||||
27 | Cobalt | Co | 58.933 | 32 | 27 | 27 | 4 | 9 | solid | yes | yes | Transition Metal | 1.7 | 1.88 | 7.881 | 8.86E+00 | 1768.15 | 3200 | 14 | Brandt | 1735 | 0.421 | 4 | |||||
28 | Nickel | Ni | 58.693 | 31 | 28 | 28 | 4 | 10 | solid | yes | yes | Transition Metal | 1.6 | 1.91 | 7.6398 | 8.91E+00 | 1726.15 | 3186 | 11 | Cronstedt | 1751 | 0.444 | 4 | |||||
29 | Copper | Cu | 63.546 | 35 | 29 | 29 | 4 | 11 | solid | yes | yes | Transition Metal | 1.6 | 1.9 | 7.7264 | 8.96E+00 | 1357.75 | 2835 | 11 | Prehistoric | 0.385 | 4 | ||||||
30 | Zinc | Zn | 65.38 | 35 | 30 | 30 | 4 | 12 | solid | yes | yes | Transition Metal | 1.5 | 1.65 | 9.3942 | 7.13E+00 | 692.88 | 1180 | 15 | Prehistoric | 0.388 | 4 | ||||||
31 | Gallium | Ga | 69.723 | 39 | 31 | 31 | 4 | 13 | solid | yes | yes | Metal | 1.8 | 1.81 | 5.9993 | 5.91E+00 | 302.91 | 2477 | 14 | de Boisbaudran | 1875 | 0.371 | 4 | 3 | ||||
32 | Germanium | Ge | 72.64 | 41 | 32 | 32 | 4 | 14 | solid | yes | yes | Metalloid | 1.5 | 2.01 | 7.8994 | 5.32E+00 | 1211.45 | 3106 | 17 | Winkler | 1886 | 0.32 | 4 | 4 | ||||
33 | Arsenic | As | 74.922 | 42 | 33 | 33 | 4 | 15 | solid | yes | yes | Metalloid | 1.3 | 2.18 | 9.7886 | 5.78E+00 | 1090.15 | 887 | 14 | Albertus Magnus | 1250 | 0.329 | 4 | 5 | ||||
34 | Selenium | Se | 78.96 | 45 | 34 | 34 | 4 | 16 | solid | yes | yes | Nonmetal | 1.2 | 2.55 | 9.7524 | 4.81E+00 | 494.15 | 958 | 20 | Berzelius | 1817 | 0.321 | 4 | 6 | ||||
35 | Bromine | Br | 79.904 | 45 | 35 | 35 | 4 | 17 | liq | yes | yes | Halogen | 1.1 | 2.96 | 11.8138 | 3.12E+00 | 266.05 | 332 | 19 | Balard | 1826 | 0.474 | 4 | 7 | ||||
36 | Krypton | Kr | 83.798 | 48 | 36 | 36 | 4 | 18 | gas | yes | yes | Noble Gas | 1 | 13.9996 | 3.73E-03 | 115.93 | 119.93 | 23 | Ramsay and Travers | 1898 | 0.248 | 4 | 8 | |||||
37 | Rubidium | Rb | 85.468 | 48 | 37 | 37 | 5 | 1 | solid | yes | yes | Alkali Metal | 3 | 0.82 | 4.1771 | 1.53E+00 | 312.79 | 961 | 20 | Bunsen and Kirchoff | 1861 | 0.363 | 5 | 1 | ||||
38 | Strontium | Sr | 87.62 | 50 | 38 | 38 | 5 | 2 | solid | yes | yes | Alkaline Earth Metal | 2.5 | 0.95 | 5.6949 | 2.64E+00 | 1042.15 | 1655 | 18 | Davy | 1808 | 0.301 | 5 | 2 | ||||
39 | Yttrium | Y | 88.906 | 50 | 39 | 39 | 5 | 3 | solid | yes | yes | Transition Metal | 2.3 | 1.22 | 6.2173 | 4.47E+00 | 1799.15 | 3609 | 21 | Gadolin | 1794 | 0.298 | 5 | |||||
40 | Zirconium | Zr | 91.224 | 51 | 40 | 40 | 5 | 4 | solid | yes | yes | Transition Metal | 2.2 | 1.33 | 6.6339 | 6.51E+00 | 2125.15 | 4682 | 20 | Klaproth | 1789 | 0.278 | 5 | |||||
41 | Niobium | Nb | 92.906 | 52 | 41 | 41 | 5 | 5 | solid | yes | yes | Transition Metal | 2.1 | 1.6 | 6.7589 | 8.57E+00 | 2741.15 | 5017 | 24 | Hatchett | 1801 | 0.265 | 5 | |||||
42 | Molybdenum | Mo | 95.96 | 54 | 42 | 42 | 5 | 6 | solid | yes | yes | Transition Metal | 2 | 2.16 | 7.0924 | 1.02E+01 | 2890.15 | 4912 | 20 | Scheele | 1778 | 0.251 | 5 | |||||
43 | Technetium | Tc | 98 | 55 | 43 | 43 | 5 | 7 | artificial | yes | yes | Transition Metal | 2 | 1.9 | 7.28 | 1.15E+01 | 2473.15 | 5150 | 23 | Perrier and Segr� | 1937 | 5 | ||||||
44 | Ruthenium | Ru | 101.07 | 57 | 44 | 44 | 5 | 8 | solid | yes | yes | Transition Metal | 1.9 | 2.2 | 7.3605 | 1.24E+01 | 2523.15 | 4423 | 16 | Klaus | 1844 | 0.238 | 5 | |||||
45 | Rhodium | Rh | 102.906 | 58 | 45 | 45 | 5 | 9 | solid | yes | yes | Transition Metal | 1.8 | 2.28 | 7.4589 | 1.24E+01 | 2239.15 | 3968 | 20 | Wollaston | 1803 | 0.243 | 5 | |||||
46 | Palladium | Pd | 106.42 | 60 | 46 | 46 | 5 | 10 | solid | yes | yes | Transition Metal | 1.8 | 2.2 | 8.3369 | 1.20E+01 | 1825.15 | 3236 | 21 | Wollaston | 1803 | 0.244 | 5 | |||||
47 | Silver | Ag | 107.868 | 61 | 47 | 47 | 5 | 11 | solid | yes | yes | Transition Metal | 1.8 | 1.93 | 7.5762 | 1.05E+01 | 1234.15 | 2435 | 27 | Prehistoric | 0.235 | 5 | ||||||
48 | Cadmium | Cd | 112.411 | 64 | 48 | 48 | 5 | 12 | solid | yes | yes | Transition Metal | 1.7 | 1.69 | 8.9938 | 8.69E+00 | 594.33 | 1040 | 22 | Stromeyer | 1817 | 0.232 | 5 | |||||
49 | Indium | In | 114.818 | 66 | 49 | 49 | 5 | 13 | solid | yes | yes | Metal | 2 | 1.78 | 5.7864 | 7.31E+00 | 429.91 | 2345 | 34 | Reich and Richter | 1863 | 0.233 | 5 | 3 | ||||
50 | Tin | Sn | 118.71 | 69 | 50 | 50 | 5 | 14 | solid | yes | yes | Metal | 1.7 | 1.96 | 7.3439 | 7.29E+00 | 505.21 | 2875 | 28 | Prehistoric | 0.228 | 5 | 4 | |||||
51 | Antimony | Sb | 121.76 | 71 | 51 | 51 | 5 | 15 | solid | yes | yes | Metalloid | 1.5 | 2.05 | 8.6084 | 6.69E+00 | 904.05 | 1860 | 29 | Early historic times | 0.207 | 5 | 5 | |||||
52 | Tellurium | Te | 127.6 | 76 | 52 | 52 | 5 | 16 | solid | yes | yes | Metalloid | 1.4 | 2.1 | 9.0096 | 6.23E+00 | 722.8 | 1261 | 29 | von Reichenstein | 1782 | 0.202 | 5 | 6 | ||||
53 | Iodine | I | 126.904 | 74 | 53 | 53 | 5 | 17 | solid | yes | yes | Halogen | 1.3 | 2.66 | 10.4513 | 4.93E+00 | 386.65 | 457.4 | 24 | Courtois | 1811 | 0.214 | 5 | 7 | ||||
54 | Xenon | Xe | 131.293 | 77 | 54 | 54 | 5 | 18 | gas | yes | yes | Noble Gas | 1.2 | 12.1298 | 5.89E-03 | 161.45 | 165.03 | 31 | Ramsay and Travers | 1898 | 0.158 | 5 | 8 | |||||
55 | Cesium | Cs | 132.905 | 78 | 55 | 55 | 6 | 1 | solid | yes | yes | Alkali Metal | 3.3 | 0.79 | 3.8939 | 1.87E+00 | 301.7 | 944 | 22 | Bunsen and Kirchoff | 1860 | 0.242 | 6 | 1 | ||||
56 | Barium | Ba | 137.327 | 81 | 56 | 56 | 6 | 2 | solid | yes | yes | Alkaline Earth Metal | 2.8 | 0.89 | 5.2117 | 3.59E+00 | 1002.15 | 2170 | 25 | Davy | 1808 | 0.204 | 6 | 2 | ||||
57 | Lanthanum | La | 138.905 | 82 | 57 | 57 | 6 | 3 | solid | yes | yes | Lanthanide | 2.7 | 1.1 | 5.5769 | 6.15E+00 | 1193.15 | 3737 | 19 | Mosander | 1839 | 0.195 | 6 | |||||
58 | Cerium | Ce | 140.116 | 82 | 58 | 58 | 6 | solid | yes | yes | Lanthanide | 2.7 | 1.12 | 5.5387 | 6.77E+00 | 1071.15 | 3716 | 19 | Berzelius | 1803 | 0.192 | 6 | ||||||
59 | Praseodymium | Pr | 140.908 | 82 | 59 | 59 | 6 | solid | yes | yes | Lanthanide | 2.7 | 1.13 | 5.473 | 6.77E+00 | 1204.15 | 3793 | 15 | von Welsbach | 1885 | 0.193 | 6 | ||||||
60 | Neodymium | Nd | 144.242 | 84 | 60 | 60 | 6 | solid | yes | yes | Lanthanide | 2.6 | 1.14 | 5.525 | 7.01E+00 | 1289.15 | 3347 | 16 | von Welsbach | 1885 | 0.19 | 6 | ||||||
61 | Promethium | Pm | 145 | 84 | 61 | 61 | 6 | artificial | yes | yes | Lanthanide | 2.6 | 1.13 | 5.582 | 7.26E+00 | 1204.15 | 3273 | 14 | Marinsky et al. | 1945 | 6 | |||||||
62 | Samarium | Sm | 150.36 | 88 | 62 | 62 | 6 | solid | yes | yes | Lanthanide | 2.6 | 1.17 | 5.6437 | 7.52E+00 | 1345.15 | 2067 | 17 | Boisbaudran | 1879 | 0.197 | 6 | ||||||
63 | Europium | Eu | 151.964 | 89 | 63 | 63 | 6 | solid | yes | yes | Lanthanide | 2.6 | 1.2 | 5.6704 | 5.24E+00 | 1095.15 | 1802 | 21 | Demarcay | 1901 | 0.182 | 6 | ||||||
64 | Gadolinium | Gd | 157.25 | 93 | 64 | 64 | 6 | solid | yes | yes | Lanthanide | 2.5 | 1.2 | 6.1501 | 7.90E+00 | 1585.15 | 3546 | 17 | de Marignac | 1880 | 0.236 | 6 | ||||||
65 | Terbium | Tb | 158.925 | 94 | 65 | 65 | 6 | solid | yes | yes | Lanthanide | 2.5 | 1.2 | 5.8638 | 8.23E+00 | 1630.15 | 3503 | 24 | Mosander | 1843 | 0.182 | 6 | ||||||
66 | Dysprosium | Dy | 162.5 | 97 | 66 | 66 | 6 | solid | yes | yes | Lanthanide | 2.5 | 1.22 | 5.9389 | 8.55E+00 | 1680.15 | 2840 | 21 | de Boisbaudran | 1886 | 0.17 | 6 | ||||||
67 | Holmium | Ho | 164.93 | 98 | 67 | 67 | 6 | solid | yes | yes | Lanthanide | 2.5 | 1.23 | 6.0215 | 8.80E+00 | 1743.15 | 2993 | 29 | Delafontaine and Soret | 1878 | 0.165 | 6 | ||||||
68 | Erbium | Er | 167.259 | 99 | 68 | 68 | 6 | solid | yes | yes | Lanthanide | 2.5 | 1.24 | 6.1077 | 9.07E+00 | 1795.15 | 3503 | 16 | Mosander | 1843 | 0.168 | 6 | ||||||
69 | Thulium | Tm | 168.934 | 100 | 69 | 69 | 6 | solid | yes | yes | Lanthanide | 2.4 | 1.25 | 6.1843 | 9.32E+00 | 1818.15 | 2223 | 18 | Cleve | 1879 | 0.16 | 6 | ||||||
70 | Ytterbium | Yb | 173.054 | 103 | 70 | 70 | 6 | solid | yes | yes | Lanthanide | 2.4 | 1.1 | 6.2542 | 6.97E+00 | 1097.15 | 1469 | 16 | Marignac | 1878 | 0.155 | 6 | ||||||
71 | Lutetium | Lu | 174.967 | 104 | 71 | 71 | 6 | solid | yes | yes | Lanthanide | 2.3 | 1.27 | 5.4259 | 9.84E+00 | 1936.15 | 3675 | 22 | Urbain/ von Welsbach | 1907 | 0.154 | 6 | ||||||
72 | Hafnium | Hf | 178.49 | 106 | 72 | 72 | 6 | 4 | solid | yes | yes | Transition Metal | 2.2 | 1.3 | 6.8251 | 1.33E+01 | 2500.15 | 4876 | 17 | Coster and von Hevesy | 1923 | 0.144 | 6 | |||||
73 | Tantalum | Ta | 180.948 | 108 | 73 | 73 | 6 | 5 | solid | yes | yes | Transition Metal | 2.1 | 1.5 | 7.5496 | 1.67E+01 | 3269.15 | 5731 | 19 | Ekeberg | 1801 | 0.14 | 6 | |||||
74 | Wolfram | W | 183.84 | 110 | 74 | 74 | 6 | 6 | solid | yes | yes | Transition Metal | 2 | 2.36 | 7.864 | 1.93E+01 | 3680.15 | 5828 | 22 | J. and F. d'Elhuyar | 1783 | 0.132 | 6 | |||||
75 | Rhenium | Re | 186.207 | 111 | 75 | 75 | 6 | 7 | solid | yes | yes | Transition Metal | 2 | 1.9 | 7.8335 | 2.10E+01 | 3453.15 | 5869 | 21 | Noddack, Berg, and Tacke | 1925 | 0.137 | 6 | |||||
76 | Osmium | Os | 190.23 | 114 | 76 | 76 | 6 | 8 | solid | yes | yes | Transition Metal | 1.9 | 2.2 | 8.4382 | 2.26E+01 | 3300.15 | 5285 | 19 | Tennant | 1803 | 0.13 | 6 | |||||
77 | Iridium | Ir | 192.217 | 115 | 77 | 77 | 6 | 9 | solid | yes | yes | Transition Metal | 1.9 | 2.2 | 8.967 | 2.26E+01 | 2716.15 | 4701 | 25 | Tennant | 1804 | 0.131 | 6 | |||||
78 | Platinum | Pt | 195.084 | 117 | 78 | 78 | 6 | 10 | solid | yes | yes | Transition Metal | 1.8 | 2.28 | 8.9587 | 2.15E+01 | 2045.15 | 4098 | 32 | Ulloa/Wood | 1735 | 0.133 | 6 | |||||
79 | Gold | Au | 196.967 | 118 | 79 | 79 | 6 | 11 | solid | yes | yes | Transition Metal | 1.8 | 2.54 | 9.2255 | 1.93E+01 | 1337.73 | 3129 | 21 | Prehistoric | 0.129 | 6 | ||||||
80 | Mercury | Hg | 200.59 | 121 | 80 | 80 | 6 | 12 | liq | yes | yes | Transition Metal | 1.8 | 2 | 10.4375 | 1.35E+01 | 234.43 | 630 | 26 | Prehistoric | 0.14 | 6 | ||||||
81 | Thallium | Tl | 204.383 | 123 | 81 | 81 | 6 | 13 | solid | yes | yes | Metal | 2.1 | 2.04 | 6.1082 | 1.19E+01 | 577.15 | 1746 | 28 | Crookes | 1861 | 0.129 | 6 | 3 | ||||
82 | Lead | Pb | 207.2 | 125 | 82 | 82 | 6 | 14 | solid | yes | yes | Metal | 1.8 | 2.33 | 7.4167 | 1.13E+01 | 600.75 | 2022 | 29 | Prehistoric | 0.129 | 6 | 4 | |||||
83 | Bismuth | Bi | 208.98 | 126 | 83 | 83 | 6 | 15 | solid | yes | yes | Metal | 1.6 | 2.02 | 7.2856 | 9.81E+00 | 544.67 | 1837 | 19 | Geoffroy the Younger | 1753 | 0.122 | 6 | 5 | ||||
84 | Polonium | Po | 210 | 126 | 84 | 84 | 6 | 16 | solid | yes | yes | yes | Metalloid | 1.5 | 2 | 8.417 | 9.32E+00 | 527.15 | 1235 | 34 | Curie | 1898 | 6 | 6 | ||||
85 | Astatine | At | 210 | 125 | 85 | 85 | 6 | 17 | solid | yes | yes | yes | Noble Gas | 1.4 | 2.2 | 9.3 | 7.00E+00 | 575.15 | 610 | 21 | Corson et al. | 1940 | 6 | 7 | ||||
86 | Radon | Rn | 222 | 136 | 86 | 86 | 6 | 18 | gas | yes | yes | yes | Alkali Metal | 1.3 | 10.7485 | 9.73E-03 | 202.15 | 211.3 | 20 | Dorn | 1900 | 0.094 | 6 | 8 | ||||
87 | Francium | Fr | 223 | 136 | 87 | 87 | 7 | 1 | solid | yes | yes | yes | Alkaline Earth Metal | 0.7 | 4.0727 | 1.87E+00 | 300.15 | 950 | 21 | Perey | 1939 | 7 | 1 | |||||
88 | Radium | Ra | 226 | 138 | 88 | 88 | 7 | 2 | solid | yes | yes | yes | Actinide | 0.9 | 5.2784 | 5.50E+00 | 973.15 | 2010 | 15 | Pierre and Marie Curie | 1898 | 7 | 2 | |||||
89 | Actinium | Ac | 227 | 138 | 89 | 89 | 7 | 3 | solid | yes | yes | yes | Actinide | 1.1 | 5.17 | 1.01E+01 | 1323.15 | 3471 | 11 | Debierne/Giesel | 1899 | 0.12 | 7 | |||||
90 | Thorium | Th | 232.038 | 142 | 90 | 90 | 7 | solid | yes | yes | yes | Actinide | 1.3 | 6.3067 | 1.17E+01 | 2028.15 | 5061 | 12 | Berzelius | 1828 | 0.113 | 7 | ||||||
91 | Protactinium | Pa | 231.036 | 140 | 91 | 91 | 7 | solid | yes | yes | yes | Actinide | 1.5 | 5.89 | 1.54E+01 | 1873.15 | 4300 | 14 | Hahn and Meitner | 1917 | 7 | |||||||
92 | Uranium | U | 238.029 | 146 | 92 | 92 | 7 | solid | yes | yes | yes | Actinide | 1.38 | 6.1941 | 1.90E+01 | 1405.15 | 4404 | 15 | Peligot | 1841 | 0.116 | 7 | ||||||
93 | Neptunium | Np | 237 | 144 | 93 | 93 | 7 | artificial | yes | yes | Actinide | 1.36 | 6.2657 | 2.05E+01 | 913.15 | 4273 | 153 | McMillan and Abelson | 1940 | 7 | ||||||||
94 | Plutonium | Pu | 244 | 150 | 94 | 94 | 7 | artificial | yes | yes | Actinide | 1.28 | 6.0262 | 1.98E+01 | 913.15 | 3501 | 163 | Seaborg et al. | 1940 | 7 | ||||||||
95 | Americium | Am | 243 | 148 | 95 | 95 | 7 | artificial | yes | yes | Actinide | 1.3 | 5.9738 | 1.37E+01 | 1267.15 | 2880 | 133 | Seaborg et al. | 1944 | 7 | ||||||||
96 | Curium | Cm | 247 | 151 | 96 | 96 | 7 | artificial | yes | yes | Actinide | 1.3 | 5.9915 | 1.35E+01 | 1340.15 | 3383 | 133 | Seaborg et al. | 1944 | 7 | ||||||||
97 | Berkelium | Bk | 247 | 150 | 97 | 97 | 7 | artificial | yes | yes | Actinide | 1.3 | 6.1979 | 1.48E+01 | 1259.15 | 983 | 83 | Seaborg et al. | 1949 | 7 | ||||||||
98 | Californium | Cf | 251 | 153 | 98 | 98 | 7 | artificial | yes | yes | Actinide | 1.3 | 6.2817 | 1.51E+01 | 1925.15 | 1173 | 123 | Seaborg et al. | 1950 | 7 | ||||||||
99 | Einsteinium | Es | 252 | 153 | 99 | 99 | 7 | artificial | yes | yes | Actinide | 1.3 | 6.42 | 1.35E+01 | 1133.15 | 123 | Ghiorso et al. | 1952 | 7 | |||||||||
100 | Fermium | Fm | 257 | 157 | 100 | 100 | 7 | artificial | yes | yes | Actinide | 1.3 | 6.5 | 103 | Ghiorso et al. | 1953 | 7 | |||||||||||
101 | Mendelevium | Md | 258 | 157 | 101 | 101 | 7 | artificial | yes | yes | Actinide | 1.3 | 6.58 | 33 | Ghiorso et al. | 1955 | 7 | |||||||||||
102 | Nobelium | No | 259 | 157 | 102 | 102 | 7 | artificial | yes | yes | Actinide | 1.3 | 6.65 | 73 | Ghiorso et al. | 1958 | 7 | |||||||||||
103 | Lawrencium | Lr | 262 | 159 | 103 | 103 | 7 | artificial | yes | yes | Actinide | 203 | Ghiorso et al. | 1961 | 7 | |||||||||||||
104 | Rutherfordium | Rf | 261 | 157 | 104 | 104 | 7 | 4 | artificial | yes | yes | Transactinide | 1.81E+01 | Ghiorso et al. | 1969 | 7 | ||||||||||||
105 | Dubnium | Db | 262 | 157 | 105 | 105 | 7 | 5 | artificial | yes | yes | Transactinide | 3.90E+01 | Ghiorso et al. | 1970 | 7 | ||||||||||||
106 | Seaborgium | Sg | 266 | 160 | 106 | 106 | 7 | 6 | artificial | yes | yes | Transactinide | 3.50E+01 | Ghiorso et al. | 1974 | 7 | ||||||||||||
107 | Bohrium | Bh | 264 | 157 | 107 | 107 | 7 | 7 | artificial | yes | yes | Transactinide | 3.70E+01 | Armbruster and M�nzenberg | 1981 | 7 | ||||||||||||
108 | Hassium | Hs | 267 | 159 | 108 | 108 | 7 | 8 | artificial | yes | yes | Transactinide | 4.10E+01 | Armbruster and M�nzenberg | 1983 | 7 | ||||||||||||
109 | Meitnerium | Mt | 268 | 159 | 109 | 109 | 7 | 9 | artificial | yes | yes | Transactinide | 3.50E+01 | GSI, Darmstadt, West Germany | 1982 | 7 | ||||||||||||
110 | Darmstadtium | Ds | 271 | 161 | 110 | 110 | 7 | 10 | artificial | yes | yes | Transactinide | 1994 | 7 | ||||||||||||||
111 | Roentgenium | Rg | 272 | 161 | 111 | 111 | 7 | 11 | artificial | yes | yes | Transactinide | 1994 | 7 | ||||||||||||||
112 | Copernicium | Cn | 285 | 173 | 112 | 112 | 7 | 12 | artificial | yes | yes | Transactinide | 1996 | 7 | ||||||||||||||
113 | Nihonium | Nh | 284 | 171 | 113 | 113 | 7 | 13 | artificial | yes | yes | 2004 | 7 | 3 | ||||||||||||||
114 | Flerovium | Fl | 289 | 175 | 114 | 114 | 7 | 14 | artificial | yes | yes | Transactinide | 1999 | 7 | 4 | |||||||||||||
115 | Moscovium | Mc | 288 | 173 | 115 | 115 | 7 | 15 | artificial | yes | yes | 2010 | 7 | 5 | ||||||||||||||
116 | Livermorium | Lv | 292 | 176 | 116 | 116 | 7 | 16 | artificial | yes | yes | Transactinide | 2000 | 7 | 6 | |||||||||||||
117 | Tennessine | Ts | 295 | 178 | 117 | 117 | 7 | 17 | artificial | yes | yes | 2010 | 7 | 7 | ||||||||||||||
118 | Oganesson | Og | 294 | 176 | 118 | 118 | 7 | 18 | artificial | yes | yes | Noble Gas | 2006 | 7 | 8 |
Has the atomic radius been MEASURED? If yes, by whom?
Has it been CALCULATED? If yes, how?
I soo much would like to know!
Thank You in advance!
Hello!
I've found a few mistakes with the element types. Do double check this as I'm not a chemist!
Astatine & Tennessine should be Halogen
Radon is a Noble gas
Francium is an Alkali metal
Radium is an Alkaline Earth Metal
THANK YOU VERY MUCH INDEED!
But I'm above all after the definition of the atomic radius that gave rise to the decimal values. Any idea at all???
Digital Veteran and Mathematical Artist
[#PrimeNumbers in #AmazingColourPatterns](https://primenumbers.store/)
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Hello!
I've found a few mistakes with the element types. Do double check this as I'm not a chemist!
Astatine & Tennessine should be Halogen
Radon is a Noble gas
Francium is an Alkali metal
Radium is an Alkaline Earth Metal
—
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Where did the electronegativity of thallium (81) being 2.04 come from? WebElements tells me it's 1.62 for Pauling?
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I'm having the same problem. Is it some sort of calculated Bohr value? ...Except I would expect Hydrogen to be close to 1.
Is the unit of measure Angstroms Å?