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30/12/2021 2:26 pm
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Nature of oxides of V2O3 and CrO?
(a) Amphoteric and Basic
(b) Basic and Basic
(c) Basic and Amphoteric
(d) Acidic and Acidic
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30/12/2021 2:28 pm
Correct answer: (b) Basic and Basic
Explanation:
In the case of transition metal oxides, the oxides with metals in lower oxidation states are basic in nature. Since, in V2O3 and CrO, oxidation states of V and Cr are in lower oxidation states i.e., +3 and +2 respectively. Hence both are basic oxides.
In intermediate oxidation states, they are amphoteric in nature. For example, V2O4, CrO2 MnO2 etc.
In higher oxidation states, they are acidic in nature. for example, V2O5, CrO3, Mn2O7 etc.