Compare the resonance energies of the cyclopropenyl cation (a) and the cyclopentadienyl cation (b). Is the resonance energy of (a) greater than, less than or equal to that of (b) ?
(a) (b)

Question

Compare the resonance energies of the cyclopropenyl cation (a) and the cyclopentadienyl cation (b). Is the resonance energy of (a) greater than, less than or equal to that of (b) ? (a) (b)

TestHub · Accepted Answer

(a) has 2π electrons and is aromatic; (b) has 4π electrons and is anti-aromatic. So a > b.

Chemistry - GOC Question with Solution | TestHub

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