Write formulas for the following compounds :
Thallium (I) sulphate

Explanation

To write the formula for Thallium (I) sulfate, we need to follow these steps:

### Step 1: Determine the oxidation states
- Thallium (Tl) is in the +1 oxidation state (as indicated by "Thallium (I)").
- The sulfate ion (SO₄) has a charge of -2.

### Step 2: Write the charges
- Write the oxidation states below the respective elements:
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