Question

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

• 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 1

The correct option is C

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

Pi bond is weaker bond than sigma