A) \[\overset{\text{+}}{\mathop{\text{C}}}\,{{\text{H}}_{\text{3}}}\]
B) \[{{\text{R}}_{2}}\overset{+}{\mathop{C}}\,H\]
C) \[{{R}_{3}}\overset{+}{\mathop{C}}\,\]
D) \[R\overset{+}{\mathop{C}}\,{{H}_{2}}\]
Correct Answer: C
Solution :
In carbonium ion carbon is electron deficient. The alkyl groups attached to the electron deficient carbon atom increase the electron density on carbon atom and increase the stability. Therefore, trimethyl carbonium ion \[({{R}_{3}}\overset{+}{\mathop{C}}\,)\] is the most stable.
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