A)
B)
C)
D)
Correct Answer: D
Solution :
In [a] and [c] the lone pair on N-atom is involved in resonance. Hence, these show aromaticity. [b] is already aromatic but structure [d] is not planar as one of the carbon is \[s{{p}^{3}}\] hybridised.You need to login to perform this action.
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