Which of the following statement is not correct for sigma and pi- bonds formed between two carbon atoms ?

Options

A. Sigma-bond determines the direction between carbon atoms but a pi-bond has no primary effect in this regard
B. Sigma-bond is stronger than a pi-bond
C. Bond energies of sigma- and pi-bonds are of the order of 264 kJ/mol and 347 kJ/mol, respectively
D. Free rotation of atoms about a sigma-bond is allowed but not in case of a pi-bond

Answer

C

Explanation

As sigma bond is stronger than the `pi` (pi) bond, so it must be having higher bond energy than `pi` (pi) bond.