Rank the stability of the carbocations from most stable to least stable? 3º carbocation > 20 carbocation > 10 carbocation o all carbocations have the same stability o 1° carbocation > 20 carbocation > 3º carbocation 2° carbocation > 10 carbocation > 3º carbocation

3° carbocation > 2° carbocation > 1° carbocation

Explanation:

Stability of carbocation -

Carbocation , is an electron deficient species , with 6 electrons ,

being an electron deficient species , the carbocation can be stabilized by any group , which gives electron to the carbocation .

hence ,

comparing the case of of a 3° carbocation and a 2° carbocation .

The 3° carbocation , is more stable , due to the presence of three alkyl groups , which donates the electron density to the electron deficient site of the carbocation , hence , is stable ,

but in case of  2° carbocation , there are only two electron donating , alkyl groups , hence , comparing  3° and 2° carbocation , 3° is more stable .

and ,

In case of 1° carbocation , there is only one electron donating , alkyl groups , hence , it is least stable .

Therefore ,

The order of the stability of the carbocation is -

3° carbocation > 2° carbocation > 1° carbocation

the answer to this question is 3.