The order of stability of the following carbocations:

The order of stability of the following carbocations:
  1. I > II > III
  2. III > I > II
  3. III > II > I
  4. II > III > I

Solution

CH 2 = CH - C ⊕ H 2 ↔ C ⊕ H 2 - CH = CH 2

         (I)  (Stabilised by delocalisation ( 2 eq. R.S.) )

CH 3 - CH 2 - C ⊕ H 2

         (II)  (Stabilised by only + I & hyperconjugation)(2 conjugated C-H)





III is stabilised by maximum delocalisation ( 4 R.S.)

The order of stability is III > I > II

Order of stability is:

Asked in: JEE Main 2013 (07 Apr)

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