Ca(+2)C(+4)O(-2)3 C(+4)O(-2)2 Mg(+2)O(-2) Ba(+2)(N(+5)O(-2)3)2 Na(+2)2S(+6)O(-2)4 Na(+)N(+5)O(-2)3 Ba(+2)S(+6)O(-2)4 Al(0) Cr(+3)2O(-2)3 Al(+3)2O(-2)3 Cr(0)