Using stock notation represetn the following comoounds : `HauCI_(2),TI_(2),FeO,F_(2),CuI,CuO,MnO and MnO_(2)`

Explanation

To represent the given compounds using stock notation, we need to determine the oxidation states of the metals in each compound. Stock notation uses Roman numerals to indicate these oxidation states. Let's go through each compound step by step.

### Step-by-Step Solution:

1. **HAuCl₂**
- Chlorine (Cl) has an oxidation state of -1. Since there are 2 Cl atoms, the total contribution from Cl is -2.
- Let the oxidation state of Au be x. The equation becomes:
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