Question

Oxidation number of $N$ in $H{N}_3$ ( hydrazoic acid) is:

• A. -1/3
• B. 3
• C. 0
• D. -3

Answer 1

The correct option is A -1/3

HN₃ is known as hydrazoic acid.

Since, it is a neutral compound, the sum of oxidation states of all elements is equal to zero.

Therefore, 1 + 3x = 0

⇒ x = -1/3

Hence, the oxidation number of N is -1/3.

Option A is correct.