The correct order of reactivity for reactions involving cleavage of $\mathrm{C}-\mathrm{Cl}$ bond in…
The correct order of reactivity for reactions involving cleavage of $\mathrm{C}-\mathrm{Cl}$ bond in following compounds is
I $\gt$ II $\gt$ III
II $\gt$ III $\gt$ I
III $\gt$ I $\gt$ II
III $\gt$ II $\gt$ I
Solution
Greater the number of electron withdrawing groups $\left(-\mathrm{NO}_2\right)$ at $\mathrm{o} / \mathrm{p}$ position, greater is the reactivity. Hence, 2,4,6-trinitrochlorobenzene has the highest reactivity.
