Reason
Cyclopentadienyl anion is aromatic in character.
Assertion
Cyclopentadienyl anion is much more stable than allyl anion.
A
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
B
Both Assertion and Reason are incorrect.
C
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
D
Assertion is correct but Reason is incorrect.
Correct option is A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
Correct option (a) Both A and R are true and R is the correct explanation of A
Explanation: Here the resonance approach is a poor predictor of stability. The Huckel rule. based on molecular orbital theory is a much better predictor of stability for these aromatic and Antiaromatic system.