Name the oxides whose formulas are ZnO, Ag2O, Li2O, Cl2O7, Cl2O, ClO2, As2O3, As2O5.

When naming oxides, it is necessary to take into account the valence of the metal or non-metal. The valence of each chemical element can be viewed in the periodic table, it is the same with the number of the group in which the element is located.

1) ZnO – zinc oxide (II);

2) Ag2O – silver (I) oxide;

3) Li2O – lithium (I) oxide;

4) Cl2O7 – chlorine oxide (VII);

5) Cl2O – chlorine oxide (I);

6) ClO2 – chlorine dioxide;

7) As2O3 – arsenic (III) oxide;

8) As2O5 – arsenic (V) oxide.