Determine the oxidtion number of O in the following : `OF_(2),Na_(2)O_(2),Na_(2)O,KO_(2),KO_(2),KO_(3) and O_(2)F_(2)`

Explanation

To determine the oxidation number of oxygen in the given compounds, we will follow a systematic approach for each compound. The oxidation number can be calculated using the known oxidation states of other elements in the compound.

### Step-by-Step Solution:

1. **For OF₂:**
- Let the oxidation number of O be \( x \).
- Fluorine (F) has an oxidation number of -1.
- The equation will be:
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