Question

In which of the following compounds does nitrogen have the highest oxidation number?

• A. Nitrogen Gas
• B. Aluminum Nitride
• C. Potassium Nitrate
• D. Nitrous Acid

Answer 1

The correct option is C Potassium Nitrate

In Nitrogen gas, oxidation no. of Nitrogen is $0$. Because , it exist in free state.

In Aluminium Nitrate, it is $-3⟹AlN⟹+3+x=0=-3.$

In Potassium Nitrate, $KN{O}_3⟹1+x+3(-2)=0=+5$ .

In $HN{O}_2$ $⟹1+x+2(-2)=0,x-3=0,x=3.$

So, highest oxidation no. is in Potassium nitrate.