Give the oxidation state of the metal for each of the following oxides of [Hint: first transition series. (Hint: Oxides of formula M3O4 are examples of mixed valence compounds in which the metal ion is present in more than one oxidation state. It is possible to write these compound formulas in the equivalent format MO-M2O 3, to permit estimation of the metal’s two oxidation states.)
(a) SC2O3.
(b) TiO2.
(C) V2O5.
(d) CrO3.
(e) MnO2.
(f) Fe3O4.
(g) CO3O4.
(h) NiO.
(i) CU2O
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