You visited us 2 times! Enjoying our articles? Unlock Full Access!

Directive Influence of Substituents

Which of the ...

Question

Which of the following carbocations is least stable?

P h \oplus C H_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

\oplus C H = C H_{2}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

{M e}_{2} \oplus C H

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C H_{2} = C H - \oplus C H_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $\oplus C H = C H_{2}$
In the carbocation of the options $B$ , the positive charge is present on sp hybridized carbon atom whereas, in the carbocations of options $A, C$ and $D$ , the positive charge is present on $s p^{3}$ hybridized carbon atom.
Now $s p$ hybridized carbon atom is more electronegative than $s p^{3}$ hybridized carbon atom. As the percentage s character increases, the electronegativity increases.
When the positive charge is on the more electronegative carbon atom, the carbocation is less stable.
Thus, the carbocation of option $B$ is less stable.

Suggest Corrections

Similar questions

C H_{3} - C^{⨁} H_{2}

C H_{2} = C^{⨁} H

C H_{2} = C H - C^{⨁} H_{2}

C_{6} H_{5} - C H_{2}^{⨁}

C H_{3} O \oplus C H_{2}

C H_{3} \oplus C H_{2}

{M e}_{2} \oplus C H

C H_{3} C H_{2} \oplus C H_{2}

C H_{2} = C H - \oplus C H_{2}

C H_{3} C H_{2} \oplus C H_{2}

C H_{2} = \oplus C H

C H_{3} \oplus C H_{2}

M e_{3} + C

M e_{2} + C H

M e_{2} + C H

M e + C H_{2}

C H_{2} = C H - + C H_{2} and C H_{2} = C H - C H_{2} - + C H_{2}

C H_{3} - N H - + C H_{2} and + C H_{2} - O H

C H_{3} - O - C H_{2} - + C H_{2} and C H_{2} - O - + C H_{2}

C H_{3} - + C H - C H_{2} C H_{2} C H_{3} and C H_{3} C H_{2} - + C H - C H_{2} C H_{3}

C H_{3} - \oplus C H - C H_{3}

C H_{3} - \oplus C H - O C H_{3}

C H_{3} - \oplus C H - C H_{2} - O C H_{3}

Join BYJU'S Learning Program