Question

2/53
when nitrogen becomes an ion, what is its oxidation number?
-3 +5 +3 -5

Explanation:

Step1: Determine the valence electrons of nitrogen

Nitrogen has 5 valence electrons.

Step2: Analyze the formation of nitrogen ion

Nitrogen tends to gain 3 electrons to achieve a stable electron configuration (like noble gases).

Step3: Calculate the oxidation number

When it gains 3 electrons, its oxidation number is - 3.

Answer:

-3