Chemistry - GOC Question with Solution | TestHub
ChemistryGOCAromaticityMedium2 minQB
ChemistryMediumsingle choice
Which of the following compounds is not aromatic ? (assume planar rings)
(A) 
(B) 
(C) 
(D) 
Options:
Answer:
D
Solution:
(A) thiophene, (B) the cyclopentadienyl anion and (C) the pyrylium cation each have 6 π electrons in a planar ring : aromatic. (D) the cycloheptatrienyl anion has 8 π electrons (4n, n = 2) : anti-aromatic, not aromatic.
Stream:JEESubject:ChemistryTopic:GOCSubtopic:Aromaticity
⏱ 2mℹ️ Source: QB
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