Question

Which of the following species is not aromatic?

Answer 1

where r the species name ??

Answer 2

Explanation:

The species that is not aromatic in nature is: The options are missing here. Still, the right answer of the question is Cyclopentadienyl cation is not aromatic. The explanation of the same is upon applying Hiickel Rule, [(4n+2) π electrons] system, cyclopentadienyl cation will have [4 π-electrons, antiaromatic]. Hence, the right answer is option d) Cyclopentadienyl cation which is not aromatic. Hence, here rest of the options are eliminated.