Ответ:
а) P₂O₅, CO₂, SO₃, SiO₂, Mn₂O₇
б) Na₂O, CrO, Cu₂O
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Ответ:
а) P₂O₅, CO₂, SO₃, SiO₂, Mn₂O₇
б) Na₂O, CrO, Cu₂O