Chemistry - GOC Question with Solution | TestHub

(A) the cyclopentadienyl cation is anti-aromatic (4π) and the anion is aromatic (6π), so the cation is less stable : wrong. (B) the cycloheptatrienyl anion (8π, anti-aromatic) is less stable than the tropylium cation (6π, aromatic) : correct. (C) the cyclopropenyl anion is anti-aromatic (4π) and the cation is aromatic (2π), so the anion is less stable : wrong.