Which of the following statements about resonance is not correct ?

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The different resonance structures of a molecule have fixed arrangement of atomic nuclei.

The different resonance structures of a molecule should have same number of unpaired electrons

The hybrid structure has equal contribution from all the resonating structures.

None of the individual resonating structures explains the various characteristics of the molecule

answer is C.

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Detailed Solution

Given data: It is given to identify that what is wrong statement about resonace.

Explanation: Not need equal contributions from all resonating structures.

Where charge separate is absent in resonating structures they have greater contribution to hybrid as compared to resonating structure with charge separation.

The hybrid structures needn't have equal contribution from all the resonating structures. For instance, the resonance structures for complimentary separation have greater contribution to hybrid than the resonance structures with charge separation.

Hence, option (C) the hybrid structure has equal contribution from all the resonating structure. is correct answer.

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