JEE Main 2022 — General Organic Chemistry Question with Solution

Characteristics of aromatic compounds include:
- Must be Cyclic and planar
- Must have $\left(4\mathrm{n}+2\right)$$\mathrm{\pi }$ electrons $\left(\mathrm{n}=1, 2, 3, 4, ....\right)$
- Resist Addition but Prefer Substitution.
- Must Possess Resonance Energy.
Due to severe non-bonded interactions between the internal hydrogen (as shown in figure), the ring assumes non-planar geometry in 10-annulene, hence, it is not an aromatic compound.