Chemistry - GOC Question with Solution | TestHub
ChemistryGOCRESONANCE AND MESOMERIC EFFECTEasy2 minQB
ChemistryEasysingle choice
Which is not an example of resonance ?
(I) 
⟷ 
(II) 
⟷ 
(III) 
⟷ 
(IV) 
⟷ 
Options:
Answer:
C
Solution:
(I), (II) and (IV) move only pi electrons, so the atoms stay in place.
In (III) the + moves from a ring carbon to the CH₂ outside the ring. That needs a hydride or methyl shift, so the atoms change position. It is not resonance (it is a rearrangement).
Stream:JEESubject:ChemistryTopic:GOCSubtopic:RESONANCE AND MESOMERIC EFFECT
⏱ 2mℹ️ Source: QB
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