Aryl halides are less reactive towards nucleophilic substitution reactions as compared to alkyl hali — Haloalkanes and Haloarenes Chemistry Question

💡 Solution & Explanation

Aryl halides exhibit low reactivity mainly because the halogen's lone pair participates in resonance with the aromatic ring, giving the $C-X$ bond partial double-bond character. Additionally, the $sp^2$ -hybridized carbon is more electronegative, holding the electrons tightly.