Respuesta :

Answer is: oxidation number of nitrogen is +5 (3. 5).
Oxygen has greater electronegativity than nitrogen, so oxygen has negative oxidation number, in this compound -2, so oxidation number of nitrogen is +5:
· x + 5 · (-2) = 0.
2x = 10.
x = 10 ÷ 2.
x = 5; oxidation number of nitrogen.
The sum of the oxidation numbers in a neutral compound is zero.
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