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Atomic Number |
Name |
Neutral Atom (ppm) |
Cation1 Charge |
Cation1 Radius (ppm) |
Cation2 Charge |
Cation2 Radius (ppm) |
Anion Charge |
Anion Radius (ppm) |
1 | Hydrogen | 78 | 1+ | 1- | 154 | |||
2 | Helium | 32 | ||||||
3 | Lithium | 152 | 1+ | 78 | ||||
4 | Beryllium | 113 | 2+ | 34 | ||||
5 | Boron | 83 | 3+ | 23 | ||||
6 | Carbon | 77 | 4- | 260 | ||||
7 | Nitrogen | 71 | 3- | 171 | ||||
8 | Oxygen | 73 | 2- | 132 | ||||
9 | Fluorine | 71 | 1- | 133 | ||||
10 | Neon | 70 | ||||||
11 | Sodium | 186 | 1+ | 98 | ||||
12 | Magnesium | 160 | 2+ | 79 | ||||
13 | Aluminum | 143 | 3+ | 57 | ||||
14 | Silicon | 117 | 4+ | 26 | 4- | 271 | ||
15 | Phosphorus | 115 | 3- | 212 | ||||
16 | Sulfur | 104 | 2- | 184 | ||||
17 | Chlorine | 99 | 1- | 181 | ||||
18 | Argon | 98 | ||||||
19 | Potassium | 227 | 1+ | 133 | ||||
20 | Calcium | 197 | 2+ | 106 | ||||
31 | Gallium | 122 | 3+ | 62 | 1+ | 113 | ||
32 | Germanium | 123 | 2+ | 90 | 4- | 272 | ||
33 | Arsenic | 125 | 5+ | 46 | 3+ | 69 | 3- | 222 |
34 | Selenium | 117 | 4+ | 69 | 2- | 191 | ||
35 | Bromine | 114 | 1- | 195 | ||||
36 | Krypton | 112 | ||||||
37 | Rubidium | 248 | 1+ | 149 | ||||
38 | Strontium | 215 | 2+ | 127 | ||||
49 | Indium | 163 | 3+ | 92 | 1+ | 132 | ||
50 | Tin | 141 | 4+ | 74 | 2+ | 93 | 4- | 294 |
51 | Antimony | 141 | 5+ | 62 | 3+ | 89 | 3- | 245 |
52 | Tellurium | 143 | 6+ | 56 | 4+ | 97 | 2- | 211 |
53 | Iodine | 133 | 1- | 196 | ||||
54 | Xenon | 130 | ||||||
55 | Cesium | 265 | 1+ | 165 | ||||
56 | Barium | 217 | 2+ | 143 | ||||
81 | Thallium | 170 | 3+ | 105 | 1+ | 149 | ||
82 | Lead | 175 | 4+ | 84 | 2+ | 132 | ||
83 | Bismuth | 155 | 5+ | 74 | 3+ | 96 | ||
84 | Polonium | 167 | 4+ | 65 | 2- | 230 | ||
85 | Astatine | 5+ | 57 | 1- | 227 | |||
86 | Radon | 145 | ||||||
87 | Francium | 270 | 1+ | 180 | ||||
88 | Radium | 223 | 2+ | 152 |
Data taken from John Emsley, The Elements, 3rd edition. Oxford: Clarendon Press, 1998.
https://www.angelo.edu/faculty/kboudrea/periodic/trends_atomicradius.htm