Which of the following is most stable carbocation?

• A

  $\mathrm{CH}_3^{+}$
• B

  $\mathrm{CH}_3 \mathrm{CH}_2 \stackrel{+}{\mathrm{C}} \mathrm{H}_2$
• C

  $\mathrm{CH}_3 \stackrel{+}{\mathrm{C}} \mathrm{HCH}_3$
• Correct answer
  D

  
  

Solution

Carbocation is more stable if it is bonded to electron relasing group which somewhat stabilise the carbocation. So more the number of electron releasing groups, more is the stability.

Hence, the correct answer is option: 'D'.