Which is the most reactive halide towards S_{ | vedclass

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(B) The rate of $S_{N^1}$ reaction is directly proportional to the stability of the carbocation intermediate formed after the departure of the leaving

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(B) The rate of $S_{N^1}$ reaction is directly proportional to the stability of the carbocation intermediate formed after the departure of the leaving group $(Cl^-)$.In option $B$,the carbocation formed is adjacent to the nitrogen atom of the $-NH-$ group.The lone pair on the nitrogen atom can stabilize the adjacent carbocation through resonance (forming an iminium ion),which significantly increases the stability of the carbocation compared to the others.Therefore,the halide in option $B$ is the most reactive towards $S_{N^1}$ reaction.

Which is the most reactive halide towards $S_{N^1}$ reaction?

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