Thank you for reporting, we will resolve it shortly
Q.
Among the following,
the antiaromatic compounds are
KVPYKVPY 2017Hydrocarbons
Solution:
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 $sp^2$ - hybridisation.
Thus, compound $III$ and $IV$ are anti-aromatic.