Divide the formulas listed in the task into three equal groups, name each of which: NaNO2, Cu (NO3) 2

Divide the formulas listed in the task into three equal groups, name each of which: NaNO2, Cu (NO3) 2, HNO2, NH3, N2O3, Li3N, N2O5, Al (NO3) 3, Mg3N2, Na3N, HNO3, KNO2.

All connections present can be divided into:

oxides:
N2O3 – nitric oxide (III);
N2O5 – nitric oxide (V).
acids:
HNO2 – nitrous acid;
NH3 – nitric acid;
HNO3 is nitric acid.
salt:
NaNO2 – sodium nitrite (nitrous acid salt);
Cu (NO3) 2 – copper (II) nitrate (nitric acid salt);
Li3N – lithium azide (nitric acid salt);
Al (NO3) 3 – aluminum nitrate (nitric acid salt);
Mg3N2 – magnesium azide (nitric acid salt);
Na3N – sodium azide (salt of nitrous – hydrochloric acid);
KNO2 – potassium nitrite (nitrous acid salt).