Solution:
The C−Cl bond in C6H5Cl is shorter than in CH3Cl and therefore, stronger. The lone pair of electrons on chlorine are dispersed throughout the benzene ring by resonance. This gives the C−Cl bond, a double bond character.
The bond in chlorobenzene as compared with bond in methyl chloride is
The C−Cl bond in C6H5Cl is shorter than in CH3Cl and therefore, stronger. The lone pair of electrons on chlorine are dispersed throughout the benzene ring by resonance. This gives the C−Cl bond, a double bond character.