Which of the following statements about resonance is not correct?
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a
The different resonance structures of a molecule have fixed arrangement of atomic nuclei
b
The different resonance structures of a molecule should have same number of unpaired electrons
c
The hybrid structure has equal contribution from all the resonating structures
d
None of the individual resonating structures explains the various characteristics of the molecule
answer is C.
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Detailed Solution
→ In all the resonance structures the position of nuclei remains same.→ Number of unpaired electrons and number of paired electrons remains same in all the resonane strucutres.→ Different resonating structures contributes differenently towards the resonance hybrid.→ All the properties of a molecule not explained by single resonance structure.E.g: C – C bond length in benzene is explained by two resonance structures and not explained by any one of the resonance structure.