Question

The oxidation state of nitrogen is correctly given for

	Compound	Oxidation state
a	$\left[CO{\left(N{H}_3\right)}_{5}Cl\right]C{l}_2$	0
b	$N{H}_{2}OH$	-2
c	${\left(N_2{H}_5\right)}_{2}S{O}_4$	+2
d	$M{g}_3{N}_2$	-3

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

Answer: (D)

a. ${\left[C{O}^{+3}{\left(N\stackrel{0}{H_3}\right)}_{5}C{l}^{1-}\right]}^{+2}C{l}_2^{-1\times 2}$
$N{H}_3:x+3=0\Rightarrow x=-3$; oxidation state of $N=$ $-3$
b. $N{H}_{2}OH:x+3-2=0\Rightarrow x=-1$
Oxidation state of $N=-1$
c. ${\left(N_2{H}_5\right)}_2^{+1\times 2}S{O}_4^{2-}$ :
$N_2{H}_5^{\oplus }:2x+5=+1\Rightarrow x=-2$
Oxidation number of $N=-2$
d. $\stackrel{+2\times 3-3\times 2}{M{g}_3{N}_2}$ : Oxidation state of $N=-3$