Determine the valence of metals in the following oxides: CuO, Cu2O, Na2O, Al2O3, FeO, Fe2O3.
| September 26, 2021 | education
To determine the valence of metals, one should arrange the oxidation states of the elements. The valency of the metal will be equal to its oxidation state.
1) CuO: Cu + 2 O-2, copper valence 2
2) Cu2O: Cu + 1 O-2, copper valence 1
3) Na2O: Na + 1 O-2, sodium valence 1
4) Al2O3: Al + 3 O-2, aluminum valence 3
5) FeO: Fe + 2 O-2, iron valence 2
6) Fe2O3: Fe + 3 O-2, iron valence 3
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