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

Explanation

Haloalkanes are more polar than haloarenes. Therefore, the carbon atom carrying the halogen in haloalkanes is more electron deficient (i.e., more positively charged) than that in haloarenes. As a result, haloalkanes undergo nucleophilic substitution reactions more readily than haloarenes.
On the other hand, haloarenes contain a benzene ring. Since the typical reactions of benzene are electrophilie substitution reactions, therefore, haloarenes undergo electrophilic substitution reactions preferably while haloalkanes which donot contain a benzene ring donot undergo electrophilic substitution reactions.