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Per NCERT §8.7.6, the experimentally observed C-C bond length in benzene is which value?
A120 pm
B139 pm
C154 pm
D134 pm
Answer & Solution
Correct answer: B. 139 pm
NCERT §8.7.6: all benzene C-C bonds are equal at 139 pm (between single 154 and double 134 pm). Evidence for resonance.
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