Question

What is the oxidation number of nitrogen (N) in the compound HNO3? +1 +5 +6 +7

Answer 1

HNO3 (Nitric acid)

H⁺¹ N⁺⁵ O₃⁻²​

Oxidation numbers:​

Hydrogen: +1​

Nitrogen: +5​

Oxygen : -2

ANSWER The oxidation number of nitrogen is +5​

`\textbf{Spymore}`​​​​

Answer 2

Oxygen is always -2 and Hydrogen is always +1. For the compound to be overall have a charge of zero, all the charges have to add to zero.

1 + x + 3(-2) = 0
1 + x -6 = 0
-5 + x = 0
x = +5