Electron Affinities (EA)*
| Atom | EA (kJ/mol) |
|---|---|
| H | 73 |
| Li | 60 |
| B | 8 |
| C | 122 |
| N | 0 |
| O | 141 |
| F | 328 |
| Na | 53 |
| Al | 44 |
| Si | 134 |
| Atom | EA (kJ/mol) |
|---|---|
| P | 72 |
| S | 200 |
| B | 349 |
| C | 48 |
| N | 20 |
| O | 118 |
| F | 325 |
| Na | 295 |
| Al | 195 |
| Si | 190 |
O-(g) + e- → O2-(g) -798 (kJ/mol)
S-(g) + e- → S2-(g) -640
*Electron affinities are defined as heat liberated (e.g., ΔH for H(g) + e- → H-(g) is -73 kJ/mol)
Reference: Dasent, pps. 57-58; H. Hotop and W.C. Lineberger, J. Phys. Chem. Ref. Data, 4, 539-76 (1975)