Question

Which compound is aromatic?

• A.
• B.
• C.
• D.

Answer 1

Answer: (D)

Answer 2

is aromatic because the compound is cyclic and number of electrons is $2$ which is in accordance with the Huckels rule $(4n+2)\pi$ . When $n=0$ , according to this rule, number of $\pi$ electrons is $4\times 0+2=2$ .