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

Question

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

Tardigrade Admin · Accepted Answer

Bond energy of sigma and pi fronds are not of the order of 264 kJ/mol and 347 kJ/mol respectively. The bond energy of C - C is 347 kJ/mol and of C = C is 619 kJ/mol.

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

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

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

Sigma bond is stronger than a pi-bond

Bond energies of sigma and pi-bonds are of the order of $264 k J / m o l$ and $347 k J / m o l,$ respectively

Bond energy of sigma and pi fronds are not of the order of $264 k J / m o l$ and $347 k J / m o l$ respectively. The bond energy of $C - C$ is $347 k J / m o l$ and of $C = C$ is $619 k J / m o l$ .