Write a note on the halogen compounds containing `sp^(2)C-X` bonds.

Explanation

(a) Vinylic halides : These are the compounds in which the halogen atom is bonded to an `sp^(2)` - hybridised carbon atom of a carbon - carbon double bond `(gt C = C lt)`.

(b) Aryl halides : These are the compounds in which the halogen atom is directly bonded to the `sp^(2)` - hybridised carbon atom of an aromatic ring.