Give the oxidation state for the metal ion in each of the following compounds, respectively:
K2O, CaO, TiO2 , V2O5
Enter the oxidation states of the metals in the order given, separated by commas (e.g., +1,+3,-2,+2)
Metals often react with oxygen to produce ionic oxides such as K2O, CaO, TiO2,and V2O5
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