Question

Which one of the following compounds is aromatic in nature ?

• A.
• B.
• C.
• D.

Answer 1

Answer: (D)

(1) (Acenaphthene)

$\to 10\pi e^{-}$in cyclic conjugation
$\to$ Aromatic

$4\pi e^{-}$in ring conjugation
$\Rightarrow$ Anti Aromatic

$4\pi e^{-}$in ring conjugation
$\Rightarrow$ Antiaromatic