Give the names and formulae of the compounds in which sulphur exhibits an oxidation state of
(A)`-2` , (B)`+4` , ( C)`+6`

Explanation

To solve the question regarding the oxidation states of sulfur in various compounds, we will analyze each oxidation state step-by-step.

### Step 1: Identify the compound for oxidation state -2
- **Compound**: Hydrogen sulfide
- **Formula**: H₂S
- **Calculation**:
- Let the oxidation state of sulfur be \( x \).
- In H₂S, hydrogen has an oxidation state of +1.
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