Chemistry - Nomenclature Question with Solution | TestHub

${\text{CH}}_2=\text{CH}-\stackrel{\oplus }{\text{C}}{\text{H}}_2\leftrightarrow \stackrel{\oplus }{\text{C}}{\text{H}}_2-\text{CH}={\text{CH}}_2$

$\left(\mathrm{I}\right)$ Stabilised by delocalisation and two equivalent           resonating structure
 
${\text{CH}}_3-{\text{CH}}_2-\stackrel{\oplus }{\text{C}}{\text{H}}_2$

 $\left(\mathrm{II}\right)$ Stabilised by only $+\mathrm{I}$ & hyperconjugation $\left(2\mathrm{\alpha }-\mathrm{H}\right)$.





$\left(\mathrm{III}\right)$ It is stabilised by maximum delocalisation by forming four equivalent resonating structure.

The order of stability is $\mathrm{III} > \mathrm{I} > \mathrm{II}$

Order of stability is: