Examples
XeOF4
| Central atom: | Xe |  |
|---|---|---|
| Xe contributes: | 8 e− | |
| O contibutes: | 2 e− | |
| 4 x F contribute: | 4 e− | |
| Total VSE: | 14 | |
| Total VSEP: | 7 | |
| 1 x double bond | − 1 pair | |
| Revised Total: | 6 | |
| Geometry: | Square pyramidal (based on octahedral) | |
Notes
- The oxygen is as far from the lone pair as possible to minimise lone-pair:double-bond interaction.
- O=Xe–F bond angles are less than 90° due to lone–pair repulsion.