Which of the following statements is incorrect for sigma and π-bonds formed between two carbon atoms?

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Sigma-bond is stronger than a π-bond

Bond energies of sigma and π-bonds are of the order of 264 kJ/mol and 347 kJ/mol

Free rotation of surrounding atoms about a sigma-bond is allowed but not in case of a π-bond

Sigma-bond determines the direction between carbon atoms but a π-bond has no primary effect in this regard

answer is B.

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Detailed Solution

Sigma bond is stronger than a π-bond so bond energy of sigma bond is greater than π-bond.

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