Discuss the nature of C-X bond in the haloarenes.

Explanation

In haloarenes, carbon of benzene is bonded to halogen. Electronegativity of halogen is more than that of `sp^(2)` hybridised carbon of benzene ring. So,C- X bond is a polar bond. Apart from this, lone pair of electronS of halogen atom are involved in resanance with benzene ring. So, this C- X bond has acquire partial bond character.
This C-X bond of haloarenes is less polar than C-X bond of haloalkanes. This is supported by the fact that dipole moment of chlarobenzene (`mu` = 1.69 D) is little lower than that of `CH_(3)CI` (`mu` = 1.83 D)