Which of the following species is highly unstable due to being anti-aromatic? — Aromatic Hydrocarbons Chemistry Question
Question
Which of the following species is highly unstable due to being anti-aromatic?
Answer: C
💡 Solution & Explanation
The cyclopentadienyl cation is a cyclic, planar, fully conjugated system with exactly $4\pi$ electrons ($n=1$ in $4n$), making it anti-aromatic and highly destabilized by resonance.
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