Which of the following structures contribute(s)to the resonance hybrid of the intermediate formed when acetanilide undergoes para-bromination?

Question

Quizplus · Accepted Answer

All of the above structures contribute to the resonance hybrid of the intermediate formed when acetanilide undergoes para-bromination. In the para position, the lone pair of electrons on the nitrogen interacts with the pi electrons of the benzene ring and is delocalized over the ring system, leading to resonance structures (I, II, III, and IV). Therefore, all of these structures contribute to the resonance hybrid.

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