Which of the following structures contribute(s)to the resonance hybrid of the intermediate formed when acetanilide undergoes para-bromination?
A)I
B)II
C)III
D)IV
E)All of these choices.

Question

Which of the following structures contribute(s)to the resonance hybrid of the intermediate formed when acetanilide undergoes para-bromination? 
A)I 
B)II 
C)III 
D)IV 
E)All of these choices.

Quizplus · Accepted Answer

All of the structures (I, II, III, and IV) contribute to the resonance hybrid in the intermediate formed during para-bromination of acetanilide. This is because the bromine adds to the para-position, which allows for resonance stabilization through delocalization of the negative charge. Structures I, II, and III all contribute to this resonance stabilization, while structure IV represents the minor resonance contributor with less significant contribution.

Which of the Following Structures Contribute(s)to the Resonance Hybrid of the Intermediate