Resonance
| Also Known As | Resonance hybrid, mesomerism, delocalisation, resonance structures |
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What is Resonance?
The description of a molecule by two or more Lewis structures (resonance structures) where electrons are delocalized over the molecule. The actual structure is a hybrid (average) of all resonance structures. Examples include benzene, carbonate ion, and ozone. Resonance stabilizes molecules.
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
The description of a molecule by two or more Lewis structures (resonance structures) where electrons are delocalized over the molecule. The actual structure is a hybrid (average) of all resonance structures. Examples include benzene, carbonate ion, and ozone. Resonance stabilizes molecules.
Understanding resonance explains the stability of aromatic compounds, carboxylate ions, and conjugated systems. It is essential for predicting reaction sites in organic chemistry. Resonance stabilisation is exploited in the design of stable dyes and pharmaceuticals.
Resonance-stabilised compounds like benzene are less reactive than expected but some are carcinogenic. Awareness of resonance helps predict the reactivity and toxicity of aromatic compounds.