Chemistry - Nomenclature Question with Solution | TestHub

As$-\mathrm{\text{I}}$effect increases, stability of carbocation decreases. Stronger the electron withdrawing group, lesser the carbocation stability. So$\text{i}\text{i}$is least stable and$\text{i}\text{i}\text{i}$is most stable

${\text{F}}_{\text{3}}\text{C}-{\text{CH}}_2^{\oplus }<{\text{Cl}}_{\text{3}}\text{C}-{\text{CH}}_2^{\oplus }<{\text{H}}_{\text{3}}\text{C}-{\text{CH}}_2^{\oplus }$