(a) Write a metal oxide compound for manganese in each of the following oxidation states: +2, +3, +4, + 6, +7
(b) List these metal oxides in the decreasing acidic character.

Explanation

### Step-by-Step Solution:

**(a) Write a metal oxide compound for manganese in each of the following oxidation states: +2, +3, +4, +6, +7.**

1. **Oxidation State +2:**
- The metal oxide for manganese in the +2 oxidation state is **MnO**.
- Here, manganese (Mn) has a +2 charge and oxygen (O) has a -2 charge.

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