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Question: The most unstable carbocation is :...

The most unstable carbocation is :

A

CH3C⊕H2\stackrel { \oplus } { \mathrm { C } } \mathrm { H } _ { 2 }

B

Cl – CH2 –C⊕H2\stackrel { \oplus } { \mathrm { C } } \mathrm { H } _ { 2 }

C

C⊕H2\stackrel { \oplus } { \mathrm { C } } \mathrm { H } _ { 2 }– CHO

D

C⊕H2\stackrel { \oplus } { \mathrm { C } } \mathrm { H } _ { 2 }– O – CH3

Answer

C⊕H2\stackrel { \oplus } { \mathrm { C } } \mathrm { H } _ { 2 }– CHO

Explanation

Solution

most unstable due to strong – I effect of – CHO group.