What is the order of stability of carbanion?

Answer: A carbanion is a negatively charged ion in which a carbon atom exhibits trivalence (forming three bonds) and has a formal negative charge with a magnitude of at least -1.

A number of variables affect how stable a carbanion is. Tertiary > Secondary > Primary is the order of stability.

The inductive effect and resonance can both boost a carbanion’s stability. The most stable aromatic systems for carbanion are those including benzene.