Which of the following ionic species is considered anti-aromatic? — Aromatic Hydrocarbons Chemistry Question
Question
Which of the following ionic species is considered anti-aromatic?
Answer: D
💡 Solution & Explanation
The cyclopentadienyl cation is cyclic, planar, fully conjugated, and contains exactly 4 pi-electrons, fulfilling the 4n rule for anti-aromaticity, making it extraordinarily unstable.
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