Which of the following charged cyclic species strictly obeys Huckel's rule and represents a highly s — Hydrocarbons Chemistry Question

💡 Solution & Explanation

The cyclopentadienyl anion has 4 $\pi$ electrons from two double bonds and 2 electrons from the lone pair in an unhybridized p-orbital, totaling $6\pi$ ($n=1$). It is completely conjugated and aromatic.