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Which of the following structures are aromatic in nature?

Option: 1

A,B,C and D


Option: 2

Only A and B


Option: 3

Only A and C


Option: 4

Only B,C and D


Answers (1)

best_answer

As we have learnt,

Cyclic, planar, completely conjugated systems having \mathrm{(4n+2)\pi } 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 \mathrm{8\pi } electrons in conjugation and is Anti Aromatic.

So, A and B are aromatic.

Hence, Option (2) is correct.

Posted by

Kuldeep Maurya

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