Which one of the following is not aromatic?

Which one of the following is not aromatic?
  1. Cyclopentadienyl anion
  2. Benzene
  3. Cyclopentadienyl cation
  4. Cycloheptatrienyl cation

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2018 (24 Apr Shift 2)

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