# Why is secondary carbocation more stable?

Jul 26, 2017

${H}_{3} {C}^{+}$ is thus less stable than ${H}_{3} C - C {H}_{2}^{+}$, is thus less stable than ${H}_{3} C - C {H}^{+} - C {H}_{3}$, is thus less stable than ""^(+)C(CH_3)_3. An alkyl or hydrocarbyl group is conceived to be electron-releasing, and thus somewhat stabilizes the hypothetical cation. The fact that such substitution provides steric protection to the cationic centre works to the same end, and this steric effect may even be the most significant factor.
Look in your organic text for a discussion on $\text{hyperconjugation}$, which may also be invoked in this context.