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Chemistry
Which of the following species is not aromatic?
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Q. Which of the following species is not aromatic?
AIIMS
AIIMS 2016
Hydrocarbons
A
Benzene
18%
B
Cyclooctatetraenyl dianion
17%
C
Tropylium ion
17%
D
Cyclopentadienyl cation
48%
Solution:
On applying the Hückel rule,
[(4n + 2)$\pi$ electron] system,