Question
Which of the following statement is not correct for sigma and $$pi - {\text{bonds}}$$ formed between two carbon atoms?
A.
Free rotation of atoms about a sigma bond is allowed but not in case of a $$pi - {\text{bond}}$$
B.
Sigma bond determines the direction between carbon atoms but a $$pi - {\text{bond}}$$ has no primary effect in this regard
C.
Sigma bond is stronger than a $$pi - {\text{bond}}$$
D.
Bond energies of sigma and $$pi - {\text{bonds}}$$ are of the order of $$264\,kJ/mol$$ and $$347\,kJ/mol,$$ respectively
Answer :
Bond energies of sigma and $$pi - {\text{bonds}}$$ are of the order of $$264\,kJ/mol$$ and $$347\,kJ/mol,$$ respectively
Solution :
Bond energy of sigma bond is greater than $$pi - {\text{bond}}$$ , thus their energies between $$C - {\text{atoms}}$$ are $$347\,kJ\,mo{l^{ - 1}}$$ and $$264\,kJ/mol$$ respectively.