When nitrobenzene is treated with $\mathrm{Br}_{2}$ in presence of $\mathrm{FeBr}_{3}$, the major pr

Question

When nitrobenzene is treated with $\mathrm{Br}_{2}$ in presence of $\mathrm{FeBr}_{3}$, the major product formed is $m$-bromonitrobenzene. Statements which are related to the formation of $m$-isomer are\

Professor PC Thomas Classes · Answer

(a, d) : $-\mathrm{NO}_{2}$ group decreases the density of electrons at meta-position as compared to that at ortho and para position. This is because of $-I$ and $-M$ effects.\ The above intermediate is a resonance hybrid of three structures so it is more stable than the corresponding intermediates from ortho - and para - attack.\