What is the range of the oxidation states shown by nitrogen in its oxides?

+1 to +3 +2 to +4 +1 to +2 +1 to +5

+1 to +5

Nitrogen in the ground state has a valency of 3 in its ground state and it has a valency of 5 in its excited state. Hence, it forms oxides with a wide range of oxidation states where the oxidation states vary from +1 to +5.