Question

Vinyl chloride is an aliphatic halide but resembles chlorobenzene in its properties. Why?​

Answer 1

$\textcolor{red}{Answer :-}$

In both vinyl chloride and chlorobenzene, the lone pair of electrons of chlorine can enter into a resonance with $\pi$- electrons of the double bond. So, C — Cl bond acquires a partial double bond character in both and hence, cleavage of the bond in both the cases takes place with the same ease.

As a result, both behave in a similar manner in the nucleophilic substitution reactions.