The correct order of reactivity for reactions | vedclass

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(B) The cleavage of the $C-X$ bond in these haloarenes occurs via Nucleophilic Aromatic Substitution $(Ar-S_N)$ reactions.These reactions are facilita

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$III > II > I$

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(B) The cleavage of the $C-X$ bond in these haloarenes occurs via Nucleophilic Aromatic Substitution $(Ar-S_N)$ reactions.These reactions are facilitated by the presence of electron-withdrawing groups $(-NO_2)$ on the benzene ring,which stabilize the carbanion intermediate formed during the reaction.The rate of $Ar-S_N$ reaction is directly proportional to the number of electron-withdrawing groups ($-M$ and $-I$ effect) present on the ring.Compound $(I)$ has one $-NO_2$ group.Compound $(II)$ has two $-NO_2$ groups.Compound $(III)$ has three $-NO_2$ groups.Therefore,the reactivity order is $III > II > I$.

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

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