Question

Which amongst the following is the most stable carbocation?

• A.
• B.
• C. $\stackrel{+}{C}{H}_3$
• D. $C{H}_3\stackrel{+}{C}{H}_2$

Answer 1

Answer: (B)

$C{H}_3-\stackrel{\underset{|}{C}{H}_3}{\underset{\stackrel{|}{C}{H}_3}{C^{+}}}$is the most stable carbocation. It is a tertiary carbocation.
The order of carbocation stability is tertiary $>$ secondary $>$ primary $>$ methyl.
Greater is the number of alkyl groups attached to $C$ atom bearing positive charge, greater is the carbocation stability.