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Which of the following statements about resonance is INCORRECT?
AThere is a dynamic equilibrium between the canonical forms
BCanonical (contributing) structures have no real existence
CThe molecule exists as the resonance hybrid, not switching between canonical forms
DResonance lowers the energy of the molecule compared with any single canonical form
Answer & Solution
Correct answer: A. There is a dynamic equilibrium between the canonical forms
There is **no equilibrium** between canonical forms (that would be tautomerism, not resonance). The molecule has a single fixed structure — the resonance hybrid.
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