Hyperconjugation is most useful for stabilising which of the following carbocations ?

Options

A. Neo-pentyl
B. tert-butyl
C. Iso-propyl
D. Ethyl

Answer

B

Explanation

On the basis of hyperconjugation, stability order of different alkyl carbocations is
`3^(@) gt 2^(@) gt 1^(@) gt` methyl
In t-butyl cation, the C-atom bearing the positive charge is attached to three methyl gorups, thus it will have maximum hyperconjugative structures, which give it maximum stability.