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Question: Answered & Verified by Expert
Which of the following statement is correct ?
ChemistryGeneral Organic ChemistryJIPMERJIPMER 2010
Options:
  • A $+I$ group stabilises a carbocation
  • B $+I$ group stabilises a carbanion
  • C $-I$ group stabilises a carbocation
  • D $-I$ group stabilises a free radical
Solution:
2675 Upvotes Verified Answer
The correct answer is: $+I$ group stabilises a carbocation
$+I$ group (ie, electron donating groups) stabilised the carbocation. $+I$ and $-I$ groups destabilised the carbanion and carbocations respectively. $+I$ groups stabilised the free radicals but $-I$ group destabilised them.

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