Question

Among the following,

the antiaromatic compounds are

• A. I and IV
• B. III and V
• C. II and V
• D. I and III

Answer 1

Answer: (B)

One of the criteria to know anti-aromaticity is the molecule is that it should have 4n$\pi$-electrons and all the carbon atoms should have $s{p}^2$ - hybridisation.

Thus, compound $III$ and $IV$ are anti-aromatic.