Published by:
CGP EDU Academic Team
Published on: August 13, 2026
What is the correct order of decreasing stability of the following cations ?
I II
III
A
II 
I 
III
I III
B
II 
III 
I
III I C
III 
I 
II
I II
D
I 
II 
III
II III
Text Solution
Verified by ExpertsThe correct answer is:
A
Stability of the given cations can be understood by the following structures.
-effect of the two methyl Strong 
-effect of 
group
groups stabilises carbocation (I) stabilises carbocation (II)
-I -effect of 
group
destabilises the carbocation (III)
Hence, the stability of carbocation decreases
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