Atomic radii of the elements (data page) Atomic radii Atomic radii

| number_ | symbol | name_ | empirical_ | Calculated | van_der_Waals | Covalent_single_bond | Covalent_triple_bond |
|---|---|---|---|---|---|---|---|
| 1 | H | hydrogen | 25 | 53 | 120 | 38 | no data |
| 2 | He | helium | no data | 31 | 140 | 32 | no data |
| 3 | Li | lithium | 145 | 167 | 182 | 134 | no data |
| 4 | Be | beryllium | 105 | 112 | 153 a | 90 | 85 |
| 5 | B | boron | 85 | 87 | 192 a | 82 | 73 |
| 6 | C | carbon | 70 | 67 | 170 | 77 | 60 |
| 7 | N | nitrogen | 65 | 56 | 155 | 75 | 54 |
| 8 | O | oxygen | 60 | 48 | 152 | 73 | 53 |
| 9 | F | fluorine | 50 | 42 | 147 | 71 | 53 |
| 10 | Ne | neon | no data | 38 | 154 | 69 | no data |
| 11 | Na | sodium | 180 | 190 | 227 | 154 | no data |