Which of the following statements is/are TRUE regarding the aromaticity of organic molecules? — Hydrocarbons Chemistry Question

💡 Solution & Explanation

Aromaticity requires a planar, cyclic structure with a fully conjugated $\pi$ electron system containing $(4n + 2)$ $\pi$ electrons (Huckel's rule). Molecules that meet all criteria except they possess $4n$ $\pi$ electrons are highly unstable and termed anti-aromatic. Cyclooctatetraene has 8 $\pi$ electrons ($4n$) and adopts a non-planar tub shape to avoid anti-aromaticity, hence it is non-aromatic, making option D incorrect.