Among ${\rm{N}}{{\rm{H}}_3},{\rm{HN}}{{\rm{O}}_{3,}}{\rm{Na}}{{\rm{N}}_3}$ and ${\rm{M}}{{\rm{g}}_3}{{\rm{N}}_2};$ the number of molecules having nitrogen in negative oxidation state is

JEE CHEMISTRY MCQ: REDOX REACTIONS

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Among

\mathrm{N}{\mathrm{H}_3},\mathrm{HN}{\mathrm{O}_{3,}}\mathrm{Na}{\mathrm{N}_3}

and

\mathrm{M}{\mathrm{g}_3}{\mathrm{N}_2};

the number of molecules having nitrogen in negative oxidation state is

View answer and explanation

Correct option: C

Option C (3) is correct because NH3, NaN3 and Mg3N2 have nitrogen in negative oxidation state.

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\mathrm{H}

2 \mathrm{KClO}_3 \longrightarrow 2 \mathrm{KCl}+3 \mathrm{O}_2

\mathrm{HNO}_3

\mathrm{HNO}_3

\mathrm{MnO}_4^{-}(\mathrm{aq})+\mathrm{Br}^{-}(\mathrm{aq})+\mathrm{H}_2 \mathrm{O} \longrightarrow 2 \mathrm{MnO}_2(\mathrm{aq})+\mathrm{BrO}_3^{-}(\mathrm{aq})+2 \mathrm{OH}^{-}(\mathrm{aq})

\mathrm{Br}

-1

+5.