Which of the following structures are aromatic in nature?
A,B,C and D
Only A and B
Only A and C
Only B,C and D
As we have learnt,
Cyclic, planar, completely conjugated systems having electrons in complete conjugation are aromatic in nature.
Among the given species, A and B satify all the above conditions and hence, they are aromatic.
C is not completely conjugated and is Non Aromatic while D has electrons in conjugation and is Anti Aromatic.
So, A and B are aromatic.
Hence, Option (2) is correct.
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