а) Na(1)2O, Ca(2)O, Cu(1)2O, N(3)2O3 б) C(4)H4, P(3)H3, Na(1)H, Al(3)H3 в) N(3)H3, P(3)2O3, S(6)O3, H2S(2), Si(4)H4, Si(4)O2
а) Na(1)2O, Ca(2)O, Cu(1)2O, N(3)2O3 б) C(4)H4, P(3)H3, Na(1)H, Al(3)H3 в) N(3)H3, P(3)2O3, S(6)O3, H2S(2), Si(4)H4, Si(4)O2