Edexcel IAL Chemistry AS 3.16 Electron-pair repulsion theory
Edexcel IAL Chemistry AS 3.16 Electron-pair repulsion theory
Count electron regions around the central atom, arrange them for minimum repulsion and reduce angles where lone pairs exert stronger repulsion than bonding pairs.
How this is tested
- Count bonding and lone pairs around the central atom before assigning geometry.
- Explain angle compression using lone-pair–bond-pair repulsion greater than bond-pair repulsion.