Question

why haloarenes less reactive toward nucleiophilic substitution reaction​

Answer 1

Answer:

Because of less defficient carbon atoms due to resonance

Answer 2

ANSWER !

As C-X bond in aryl halide acquires a partial double bond character due to resonance while the C-X bond in alkyl halide is a pure single bond. Hence, Bond Strength of Haloarenes is more than that of Haloalkanes. So, Haloarenes are less reactive than Haloalkanes towards nucleophilic substitution .