Question

For the following compounds, the correct statement(s) with respect to nucleophilic substitution reaction is(are)

(A) I and III follow S_N¹ mechanism
(B) I and II follow S_N² mechanism
(C) Compound IV undergoes inversion of configuration
(D) The order of reactivity for I, III and IV is : IV > I > III

Answer 1

(B) I and II follow SN₂ also, as both are 1° halide.
(C) Compound (IV) undergoes inversion of configuration due topresence of chiral carbon atom.