| 1 H Hydrogen 1.0 grams 313.6 kcal/mole |
2 He Helium 4.00 grams 567 kcal/mole |
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| 3 Li Lithium 6.94 grams 124 kcal/mole |
4 Be Beryllium 9.01 grams 215 kcal/mole |
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5 B Boron 10.8 grams 191 kcal/mole |
6 C Carbon 12.0 grams 260 kcal/mole |
7 N Nitrogen 14.0 grams 335 kcal/mole |
8 O Oxygen 16.0 grams 314 kcal/mole |
9 F Fluorine 19.0 grams 402 kcal/mole |
10 Ne Neon 20.2 grams 497 kcal/mole |
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| 11 Na Sodium 23.0 grams 119 kcal/mole |
12 Mg Magnesium 24.3 grams 176 kcal/mole |
13 Al Aluminum 27.0 grams 138 kcal/mole |
14 Si Silicon 28.1 grams 188 kcal/mole |
15 P Phosphorus 31.0 grams 254 kcal/mole |
16 S Sulfur 32.1 grams 239 kcal/mole |
17 Cl Clorine 35.5 grams 300 kcal/mole |
18 Ar Argon 39.9 grams 363 kcal/mole |
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| 19 K Potassium 23.0 grams 100 kcal/mole |
20 Ca Calcium 40.1 grams 141 kcal/mole |
21 Sc Scandium 45.0 grams 151 kcal/mole |
22 Ti Titanium 47.9 grams 158 kcal/mole |
23 V Vanadium 50.9 grams 155 kcal/mole |
24 Cr Chromium 52.0 grams 156 kcal/mole |
25 Mn Manganese 54.9 grams 171.4 kcal/mole |
26 Fe Iron 55.8 grams 182 kcal/mole |
27 Co Cobalt 58.9 grams 181 kcal/mole |
28 Ni Nickel 58.7 grams 176 kcal/mole |
29 Cu Copper 63.5 grams 178.1 kcal/mole |
30 Zn Zinc 65.4 grams 216.6 kcal/mole |
31 Ga Gallium 69.7 grams 138 kcal/mole |
32 Ge Germanium 72.6 grams 182 kcal/mole |
33 As Arsenic 74.9 grams 226 kcal/mole |
34 Se Selenium 79.0 grams 225 kcal/mole |
35 Br Bromine 79.9 grams 273 kcal/mole |
36 Kr Krypton 83.8 grams 322.8 kcal/mole |
| 37 Rb Rubidium 85.5 grams 96.3 kcal/mole |
38 Sr Strontium 87.6 grams 131.3 kcal/mole |
39 Y Yttrium 88.9 grams 147 kcal/mole |
40 Zr Zirconium 91.2 grams 158 kcal/mole |
41 Nb Niobium 92.9 grams 158.7 kcal/mole |
42 Mo Molybdenum 95.9 grams 164 kcal/mole |
43 Tc Technetium 99.0 grams 168 kcal/mole |
44 Ru Ruthenium 101.1 grams 169.8 kcal/mole |
45 Rh Rhodium 102.9 grams 172 kcal/mole |
46 Pd Palladium 106.4 grams 192 kcal/mole |
47 Ag Silver 107.9 grams 174.7 kcal/mole |
48 Cd Cadmium 112.4 grams 207.4 kcal/mole |
49 In Indium 114.8 grams 133.4 kcal/mole |
50 Sn Tin 118.7 grams 169.3 kcal/mole |
51 Sb Antimony 121.8 grams 199.2 kcal/mole |
52 Te Tellurium 127.6 grams 208 kcal/mole |
53 I Iodine 126.9 grams 241 kcal/mole |
54 Xe Xenon 131.3 grams 279.7 kcal/mole |
| 55 Cs Cesium 132.9 grams 89.9 kcal/mole |
56 Ba Barium 137.3 grams 120.2 kcal/mole |
57 La* Lanthanum 138.9 grams 129 kcal/mole |
72 Hf Hafnium 178.5 grams 161 kcal/mole |
73 Ta Tantalum 180.9 grams 182 kcal/mole |
74 W Tungsten 183.9 grams 184 kcal/mole |
75 Re Rhenium 186.2 grams 181 kcal/mole |
76 Os Osmium 190.2 grams 201 kcal/mole |
77 Ir Iridium 192.2 grams 207 kcal/mole |
78 Pt Platinum 195.1 grams 207 kcal/mole |
79 Au Gold 197 grams 213 kcal/mole |
80 Hg Mercury 200.6 grams 240.5 kcal/mole |
81 Tl Tallium 204.4 grams 140.8 kcal/mole |
82 Pb Lead 207.2 grams 170.9 kcal/mole |
83 Bi Bismuth 209 grams 168 kcal/mole |
84 Po Polonium 210 grams 194 kcal/mole |
85 At Astatine 210 grams 219 kcal/mole |
86 Rn Radon 222 grams 247.8 kcal/mole |
| 87 Fr Francium 223 grams 88.3 kcal/mole |
88 Ra Radium 226 grams 121.7 kcal/mole |
89 Ac** Actinium 227 grams 159 kcal/mole |
104 Rf Rutherfordium 261 grams |
105 Db Dubnium 262 grams |
106 Sg Seaborgium 263 grams |
107 Bh Bohrium 262 grams |
108 Hs Hassium 265 grams |
109 Mt Meitnerium 266 grams |
110 Uun Ununnilium 269 grams |
111 Uuu Unununium 272 grams |
112 Uub Ununbium 277 grams |
113 Uut Ununtrium 282 grams |
114 Uuq Ununquadium 285 grams |
116 Uuh Ununhexium 289 grams |
118 Uuo Ununoctium 293 grams |
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| *Lanthanides | 58 Ce Cerium 140.1 grams 149.9 kcal/mole |
59 Pr Praseodymium 140.9 grams 131 kcal/mole |
60 Nd Neodymium 144.2 grams 131 kcal/mole |
61 Pm Promethium 145 grams |
62 Sm Samarium 150.4 grams 130 kcal/mole |
63 Eu Europium 152 grams 131 kcal/mole |
64 Gd Gadolinium 157.2 grams 142 kcal/mole |
65 Tb Terbium 158.9 grams 155 kcal/mole |
66 Dy Dysprosium 162.5 grams 157 kcal/mole |
67 Ho Holmium 164.9 grams |
68 Er Erbium 167.3 grams |
69 Tm Thulium 168.9 grams |
70 Yb Ytterbium 173 grams |
71 Lu Lutetium 175 grams 141 kcal/mole |
| **Actinides | 90 Th Thorium 232 grams |
91 Pa Protactinium 231 grams |
92 U Uranium 238 grams 92 kcal/mole |
93 Np Neptunium 237 grams |
94 Pu Plutonium 242 grams 118 kcal/mole |
95 Am Americium 243 grams 138 kcal/mole |
96 Cm Curium 248 grams |
97 Bk Berkelium 247 grams |
98 Cf Californium 251 grams |
99 Es Einsteinium 254 grams |
100 Fm Fermium 257 grams |
101 Md Mendelevium 258 grams |
102 No Nobelium 259 grams |
103 Lr Lawrencium 260 grams |