Question

Assertion: Tropylium cation is aromatic in nature.
Reason: The only property that determines its aromatic behavior is its planar structure.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
• B. Both Assertion and Reason are correct and Reason is not the correct explanation for Assertion.
• C. Assertion is correct but reason is incorrect.
• D. Assertion is incorrect and Reason is correct.

Answer 1

The correct option is C Assertion is correct but reason is incorrect.

Tropylium cation is aromatic in nature. This is not only because of its planar property, but also because it has $6\pi -$ electrons (4n + 2, where n = 1) and $6\pi -$ electrons are in complete delocalisation or in resonance with positive charge, which fulfills Huckel's rule of aromaticity. So answer is C.