Chemistry - GOC Question with Solution | TestHub
ChemistryGOCRESONANCE AND MESOMERIC EFFECTMedium2 minQB
ChemistryMediumsingle choice
Which pair does not represent a pair of resonance structures ?
(I) 
and 
(II) 
and 
(III) 
and 
(IV) 
and 
Options:
Answer:
C
Solution:
(I) allyl anion and (II) allyl cation differ only in electron positions. (IV) a diene and its charge-separated contributor also differ only in electron positions.
(III) is a keto-enol pair : the H atom changes position (tautomers).
Stream:JEESubject:ChemistryTopic:GOCSubtopic:RESONANCE AND MESOMERIC EFFECT
⏱ 2mℹ️ Source: QB
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