Question

Определить валентность атомов элементов в соединениях MgO, CuO,Fe2O3,K2O,NO2,P2O5,AlCl3,FeCl2,NaCl,K2S,CaS,Fe2S3

Answer 1

Mg(II)O(II), Cu(II)O(II), Fe2(III)O3(II), K2(I)O(II), N(IV)O2(II), P2(V)O5(II), AL(III)Cl3(I), Fe(II)Cl2(I), Na(I)Cl(I), K2(I)S(II), Ca(II)S(II), Fe2(III)S3(II)