Carbanion Stability (Higher s-character stabilizes anion; electron-withdrawing groups stabilize carbanions)

jee-mainjee-advancedneet-ug

Higher s-character stabilizes anion; electron-withdrawing groups stabilize carbanions

What each symbol means

SymbolWhat it stands for
EWG−I/−M groups
orbitals-rich orbital holds pair tighter to nucleus

When to use this

Substituent effects combine; resonance delocalization dominates when available.