Name the following compounds :
Oxides of sulphur :
(i) `S_2 O`
(ii) `S_2 O_3`
(iii) `SO_4`
(iv) `S_2 O_7`.
(b) Oxyacids of sulphur :
(i) `H_2 SO_2`
(ii) `H_2 SO_3`
(iii) `H_2 S_2 O_4`
(iv) `H_2 S_2 O_2`
(v) `H_2 S_2 O_5`.
(c) Sulphuric acid : (i) `H_2 S_2 O_3`
(ii) `H_2 S_2 O_7`
(d) Thionic acids : (i) `H_2 S_2 O_6`
(ii) `H_2 (S)_n O_6`
( e) Peroxo acids : (i) `H_2 SO_5`
(ii) `H_2 S_2 O_8`.

Explanation

To name the given compounds, we will categorize them based on their types: oxides of sulfur, oxyacids of sulfur, sulfuric acid, thionic acids, and peroxo acids. Below is the step-by-step solution for each category.

### Step-by-Step Solution:

#### (a) Oxides of Sulfur:
1. **`S2O`**: This compound is named **Sulfur Monoxide**.
2. **`S2O3`**: This compound is named **Sulfur Trioxide**.
3. **`SO4`**: This compound is named **Sulfur Tetroxide**.
...