Option (iii) is the answer.
It’s a nucleophilic substitution process that uses the mechanism. The stability of the carbocation is required for the mechanism to work. The presence of an electron withdrawing group reduces the carbocation’s stability.
Option (iii) is the answer.
It’s a nucleophilic substitution process that uses the mechanism. The stability of the carbocation is required for the mechanism to work. The presence of an electron withdrawing group reduces the carbocation’s stability.