Определите валентность данных элементов
1. SO₂, CuO, P₂O₅, FeCl₃, CaS, H₂S
2. Cl₂O₇, K₂O, N₂O₃, H₃P, KBr, CuS
1. SO₂, CuO, P₂O₅, FeCl₃, CaS, H₂S
2. Cl₂O₇, K₂O, N₂O₃, H₃P, KBr, CuS
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Ответ:
Валентности:
1. И 2.