Haloalkanes undergo nucleophilic substitution reactions while haloarenes undergo electrophilic substitution reactions. Explian.

Explanation

The various electrophilic substitution reactions follow three steps. These are given as below:
i) Generation of electrophile `(Y^(+))` : The electrophile is generated by dissociation of a reagent say XY under suitable conditions. `X - Y overset("Dissociation")to Y^(+) + :X^(-)`
ii) Attack of electrophile: In this step, electrophile attaks on the `pi`-electron cloud of aromatic ring. The formation of arenium ion or `sigma`-complex takes place which is stabilised by resonance.

iii)Removal of proton: In this step, nucleophile abstracts a proton from the intermediate carbocation. This results in the formation of substituted product.