The oxidation state of manganese is +3 in:
Correct answer: C. Mn2O3
- A. MnO
- B. MnO2
- C. Mn2O3
- D. Mn2O7
Explanation
The compound Mn2O3 is manganese(III) oxide, where manganese has an oxidation state of +3. This is derived by balancing the total oxidation states of the metal and oxygen. The other compounds: MnO has manganese in a +2 state, MnO2 has manganese in a +4 state, and Mn2O7 has manganese in a +7 state. Understanding the stoichiometry of these compounds helps deduce the correct oxidation states.
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