Question

# Consider the following carbocations.(I) $$C_6 H_5 \overset { + }{ C } H_2$$(II) $$C_2 H_5 \overset { + }{ C } H_2$$(III) $$C_6H_5\overset { + }{ C } H CH_3$$ (IV) $$C_6H_5\overset { + }{ C } H(CH_3)_2$$ The correct sequence of the stability of these is

A
II < I < III < IV
B
II < III < I < IV
C
III < I < II < IV
D
IV < III < II < I

Solution

## The correct option is C II < I < III < IVThe order of stability of the given compounds is:$$C_2 H_5 \overset { + }{ C } H_2$$ $$<$$ $$C_6 H_5 \overset { + }{ C } H_2$$ $$<$$ $$C_6H_5\overset { + }{ C } H CH_3$$ $$<$$ $$C_6H_5\overset { + }{ C } H(CH_3)_2$$So, the order is II<II<III<IVHence, Option "A" is the correct answer. Chemistry

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