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Chemical Bonding & Molecular Structure

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Chemical Bonding & Molecular Structure

Resonance

The description of a molecule whose true structure is a weighted average of two or more valid Lewis structures.

A ↔ B ↔ C Dimensionless
Chemical Bonding & Molecular Structure

Resonance Energy

The extra stability a molecule gains from electron delocalisation, measured against the most stable single Lewis structure.

ΔE_res = E(hybrid) − E(best structure) kJ/mol