Question

Arrange the given carbocations in decreasing order of stability :

• A. II, III ,I, IV
• B. III, IV , II, I
• C. III, IV, I, II
• D. I, II, III, IV

Answer 1

Answer: (B)

III, IV , II, I

$III,IV,II,I$ III is most stable as it is of $3^o$ carbocation , IV is of $2^o$carbocation, II is $1^o$ carbocation and I is vinyl carbocation (less stable).