1. Знаючи валентність елементів, напишіть
формули сполук:
P III Cl I , ZnO, CaCl I , S IV O, Cr VI O, MgBr I , Ag I O,
AlS III , C IV H, C II O, P V Cl I , KO, Cr III O, N V O,
NaS II , AlO, Mn VII O, N IV O, Sn IV F, CaP III
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