The decreasing order of reactivity of the following compounds towards nucleophilic substitution (SN2) is: (A) (II) (III) (I) (IV) (B) (II) (III) (IV) (I) (C) (III) (II) (IV) (I) (D)

Question

The decreasing order of reactivity of the following compounds towards nucleophilic substitution (SN2) is:

(A) (II) > (III) > (I) > (IV)
(B) (II) > (III) > (IV) > (I)
(C) (III) > (II) > (IV) > (I)
(D) (IV) > (II) > (III) > (I)

Prashant Kotian · Accepted Answer

Correct answer: B. SN2 reaction depend upon –I, –M effect on substrate. On increase –I, –M, effect rate of SN2 reaction increase.

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