The lower stability of ethyl anion compared to methyl anion and the higher stability of ethyl radical compared to methyl radical, respectively, are due to
 

The stability order of the above carbocations is 

Arrange the following carbanions in order of their decreasing stability

(i) ${\mathrm{H}}_3\mathrm{C}-\mathrm{C}\equiv {\mathrm{C}}^{-}$

(ii) $\mathrm{H}-\mathrm{C}\equiv {\mathrm{C}}^{-}$

(iii) ${\mathrm{H}}_3\mathrm{C}-{\mathrm{CH}}_2^{-}$

Which of the following carbocations is most stable?

Choose the correct statement regarding the formation of carbocations A and B given :-

The decreasing order of the stability of the following carbocations is

The major products $\mathrm{A}$ and $\mathrm{B}$ in the following reactions are

 Arrange the following free radicals in order of decreasing stability:

$\mathrm{Methyl}\left(\mathrm{I}\right), \mathrm{Vinyl}\left(\mathrm{II}\right),\mathrm{Allyl}\left(\mathrm{III}\right) \mathrm{and} \mathrm{benzyl}\left(\mathrm{IV}\right)$

The correct order of stability of given carbocation is:

Assertion (A): Tertiary carbocations are more reactive than secondary and primary carbocations.

Reason (R): Hyper conjugation, as well as inductive effect due to additional alkyl groups stabilise tertiary carbocations.