Question

The O.N. of nitrogen in $N{O}_3^{-}$ is

• A. -1
• B. +2
• C. +3
• D. +5

Answer 1

Answer: (D)

$N{O}_3^{-}$
Let x be the oxidation numbers of nitrogen $[x+3\times (-2)]=-1Þx=-1+6=5$