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Which of the following statements is not correct?

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The resonance energy is defined as the difference between the enthalpy of formation of the molecule and that of resonating structure having the largest energy.

Benzene has about 78 per cent contribution from Kekule's structures

Metamerism is due to the different arrangement of groups attached to a functional group.

Tautomers of a compound are in equilibrium with each other

answer is A.

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Detailed Solution

(a) It is the difference between the enthalpy of formation of the molecule and the resonating structure having lowest energy.

(b) There is 78% contribution from Kekule's structures and 22% contribution from Dewar's structures.

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