The correct order of reactivity for reactions | vedclass

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Question

(A) The reactivity of haloarenes towards nucleophilic substitution reactions increases with the presence of electron-withdrawing groups (like $-NO_2$)

Vedclass · Accepted Answer

$I < II < III$

Vedclass · Answer

(A) The reactivity of haloarenes towards nucleophilic substitution reactions increases with the presence of electron-withdrawing groups (like $-NO_2$) at the ortho and para positions.These groups stabilize the carbanion intermediate formed during the reaction by withdrawing electron density through the inductive and resonance effects.Compound $I$ has one $-NO_2$ group at the para position.Compound $II$ has two $-NO_2$ groups (one at ortho and one at para position).Compound $III$ has three $-NO_2$ groups (two at ortho and one at para position).Therefore,the reactivity order is $I < II < III$.

The correct order of reactivity for reactions involving the cleavage of the $C-Cl$ bond in the following compounds is:

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