pBlock ElementsII 1 Question 17
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17. Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen? (2012)
======= ####17. Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen? (2012)
3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed (a) $\mathrm{HNO}{3}, \mathrm{NO}, \mathrm{NH}{4} \mathrm{Cl}, \mathrm{N}_{2}$
(b) $\mathrm{HNO}{3}, \mathrm{NO}, \mathrm{N}{2}, \mathrm{NH}_{4} \mathrm{Cl}$
(c) $\mathrm{HNO}{3}, \mathrm{NH}{4} \mathrm{Cl}, \mathrm{NO}, \mathrm{N}_{2}$
(d) $\mathrm{NO}, \mathrm{HNO}{3}, \mathrm{NH}{4} \mathrm{Cl}, \mathrm{N}_{2}$
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Solution:
- Let oxidation number of $\mathrm{N}$ be $x$.
In $\mathrm{HNO}_{3},+1+x+3(-2)=0 \Rightarrow x=+5$
In NO, $\quad x-2=0 \Rightarrow x=+2$
In $\mathrm{N}_{2}$,
$x=0$
In $\mathrm{NH}_{4} \mathrm{Cl}, \quad x+4-1=0 \Rightarrow x=-3$
