It never has -2 oxidation number.
Nitrogen oxidation numbers are possible: -3 (nitrides), 0 (elemental), +3 (nitrites), +5 (nitrates).
Also +1, +2 and maybe +4 are possible (in Nitro-oxides only).
Nitrogen's oxidation number is -4.Carbon's oxidation number is +3.The cyanide ion has -1 charge. Nitrogen is in -3 state. By balancing the charges: the oxidation number of carbon is +4.
NO2 is a acidic gas. Nitrogen shows +4 oxidation number.
+4 for nitrogen
Oxidation number of N is +1. Oxidation number of O is -2.
The oxidation number of nitrogen in most compounds is -1***************2nd Opinion *******************I don't think so. Nitrogen has many oxidation numbers. +5 is pretty common, as found in nitrates. +3 is found in nitrites. -3 is found in ammonia and nitrides. What is the most common? That I don't know.
Nitrogen's oxidation number is -4.Carbon's oxidation number is +3.The cyanide ion has -1 charge. Nitrogen is in -3 state. By balancing the charges: the oxidation number of carbon is +4.
NO2 is a acidic gas. Nitrogen shows +4 oxidation number.
The oxidation number of oxygen is -2 in most of its compounds
+4 for nitrogen
Oxidation number of N is +1. Oxidation number of O is -2.
The oxidation number of nitrogen in most compounds is -1***************2nd Opinion *******************I don't think so. Nitrogen has many oxidation numbers. +5 is pretty common, as found in nitrates. +3 is found in nitrites. -3 is found in ammonia and nitrides. What is the most common? That I don't know.
2-
The sum of the oxidation numbers is zero for the compound.
the answer is -2.Related Information:The oxidation number of oxygen when it appears as an element is 0. The oxidation number in all compounds but peroxides is -2. The oxidation number of oxygen in peroxides is -1.
0 in its compounds, +1 or +2 in its compounds
0 in its compounds to +2 in its compounds
-2 for O and +2 for N in NO