Q13 · CSIR NET Chemistry, December 2019
Paper: CSIR NET December 2019 · Subject: Organic Chemistry · Chapter: General Organic Chemistry · Topic: Carbocation Stability · Marks: 2 · Difficulty: Hard
The correct order of stability of the carbocations A-C is 
A 
B 
C
A B C(a)C $>$ A $>$ B
(b)A $>$ C $>$ B
(c)B $>$ C $>$ A
(d)C $>$ B $>$ A
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
The allyl cation (C) is resonance-stabilised. The primary propyl cation (B) is next. The vinyl cation (A), with + on an sp carbon, is least stable. C > B > A (d).
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