Question

Which of the following carbocation is most stable?

• A.
• B. $(C_6{H}_5{)}_2\stackrel{+}{C}H$
• C. $C_6{H}_5\stackrel{+}{C}{H}_2$
• D. $(C_6{H}_5{)}_3\stackrel{+}{C}$

Answer 1

The correct option is A


This molecule is a cyclic, planar conjugated molecule with 6 $\pi$-electrons. Therefore, it is an aromatic compound.
Aromatic carbocation $\Rightarrow$ Most stable

Hence, option (a) is correct.