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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
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@dandyvica dandyvica commented Mar 4, 2020

Hi,

Beware the lines:

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,

contain spaces within the data and this might be problematic for some usage.

Thanks anyway !

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@McCartneyAC McCartneyAC commented May 28, 2020

Any thoughts on how best to quantitatively classify the periods of lanthanides and actinides?

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@anelda anelda commented May 31, 2020

Hi! Thanks so much for making this resource available. Under which license is this CSV file published? I would love to use it in a lesson I'm preparing for a nanotech honours class about data skills which I'd like to make available under CC-BY license. I'd also like to to give proper recognition to the author. The license isn't obvious from this repo?

Thanks!
Anelda

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@robertwb robertwb commented Jun 4, 2020

Thanks for this. I made some corrections (mostly in the Types column) at https://gist.github.com/robertwb/22aa4dbfb6bcecd94f2176caa912b952

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@anelda anelda commented Jun 15, 2020

I've created a dashboard using R and this CSV file with acknowledgment of this data source. The Dashboard is here - https://rpubs.com/anelda/periodic-table-R with the github repository at https://github.com/anelda/showcaseR-periodic-table.

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@Mc-Zen Mc-Zen commented Aug 10, 2020

I think the type of some lines might have moved by accident:
Astatine is a halogen, radon a noble gas and francium and radium alkali and alkaline earth metals respectively.
Best regards

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@Mc-Zen Mc-Zen commented Aug 10, 2020

Oh, and i think polonium is a metal actually

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@angaar96 angaar96 commented Feb 25, 2021

Hi, thanks for sharing this. I've used this database to make a simple chemistry app with tkinter, available here: https://github.com/angaar96/Simple-Chemistry-App/releases/tag/1.0
The app currently retrieves information about the elements from the database, and allows access to this information via a drop down menu. It also uses the database to allow conversion between molar and mass fractions for a mixture of up to 4 compounds.
I hope this is OK with you and again, thanks for making this readily available, saved me a lot of work.

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@johncmerfeld johncmerfeld commented Mar 13, 2021

There is a bug between Astatine and Radium where the Type is shifted by one place. Astatine should be a Halogen, Radon a Noble Gas, Francium an Alkali Metal, etc.

Thanks for creating this!

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@cis555 cis555 commented Apr 14, 2021

In which unit of measurement is the atomic radius given here?
I find other values ​​in picometers on wikipedia.
Or 'which' atomic radius is given here?

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