Arrange the following free radicals in the correct order of their stability (i)…
Arrange the following free radicals in the correct order of their stability
(i) $\mathrm{CH}_2=\stackrel{\bullet}{\mathrm{C}} \mathrm{H}$
(ii) $\stackrel{\bullet}{\mathrm{C}} \mathrm{H}_3$
(iii) $\mathrm{CH}_3-\stackrel{\bullet}{\mathrm{C}} \mathrm{H}-\mathrm{CH}_3$
(iv) $\left(\mathrm{CH}_3ight)_3 \dot{\mathrm{C}}$
$\mathrm{i}>\mathrm{ii}>\mathrm{iii}>\mathrm{iv}$
iv $>$ iii $>$ ii $>$ i
i \(>\) iii \(>\) ii \(>\) iv
$\mathrm{iv}>\mathrm{iii}>\mathrm{i}>\mathrm{ii}$
Solution
The stability of free radicals follows the order:-
$\mathrm{CH}_3 < 1^{\circ} < 2^{\circ} < 3^{\circ}$
Thus, stability order will be :-
$\text { iv }>\text { iii }>\text { ii }>\text { i }$