Draw structure of peroxodisulphuric acid.

Explanation

To draw the structure of peroxodisulfuric acid (also known as Marshall's acid), follow these steps:

### Step-by-Step Solution:

1. **Identify the Molecular Formula**:
The molecular formula of peroxodisulfuric acid is \( \text{H}_2\text{S}_2\text{O}_8 \) or \( \text{S}_2\text{O}_8 \) when considering the sulfur and oxygen atoms.

**Hint**: Remember that the presence of two sulfur atoms is key to identifying the compound as disulfuric.
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