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JEE Main levelSingle correct optionDifficulty 2 of 3g1137

The cyclopropenyl cation, $C X_{3} H X_{3} X^{+}$ , is

Anon-aromatic because the ring is strained
Bantiaromatic, with 4 $π$ electrons
Caromatic, with 6 $π$ electrons
Daromatic, with 2 $π$ electrons ( $n = 0$ )

Answer: D

The ring is planar, each carbon is sp2, and the pi system holds two electrons from the single double bond with a vacant p orbital on the third carbon.

2 = 4 n + 2

with

n = 0

, so it is aromatic.

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