Q70 / 180 · NEET 2013 (Karnataka) · Chemistry

Which of the following chemical system is non aromatic?

A
B
C
Correct answer
D

Solution

Hackle rule $(4 n+2) \pi$ electron is used to distinguish whether a compound is aromatic or non aromatic. The compound (4) has $4 \pi e^{-}$and thus it does not follow $(4 n+2)$ rule

is non aromatic.

Hence, the correct answer is option: 'D'.

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