Question

What is the oxidation number of Nitrogen in ${N{O}_3}^{-1}$ ion?

• A. +3
• B. +1
• C. - 1
• D. +5

Answer 1

The correct option is D

+5

5

In ${N{O}_3}^{-1}$ oxygen has - 2 oxidation number and adds up to - 6 note $rightarrow$ [(-2) * (3)]

$N{O}_3$ has oxidation number of - 1

So, N + (- 6) = - 1

Or, N = - 1 + 6 = +5