Question

Which of the following is aromatic?

• A.
• B.
• C.
• D.

Answer 1

Answer: (B)

Answer 2

Aromaticity can be predicted by the use of Huckle?? rule which says that $(4n + 2)$ $\pi$-electrons are required in delocalisation system to give it aromaticity. $(4n + 2) \pi$ electrons means $2, 6, 10$ .....$\pi$ electrons. Here total number of electrons available for delocalisation $= 6$ $\therefore$ It is expected to be aromatic.