Which of the following oxoacids of sulpher has -O-O- linkage ?

Options

A. `H_(2)S_(2)O_(3)`
B. `H_(2)S_(2)O_(5)`
C. `H_(2)S_(2)O_(6)`
D. `H_(2)S_(2)O_(8)`

Explanation

To determine which oxoacid of sulfur has an -O-O- linkage, we will analyze the structures of the given oxoacids step by step.

### Step 1: Identify the Oxoacids
The oxoacids of sulfur we need to analyze are:
1. H₂S₂O₃
2. H₂S₂O₅
3. H₂S₂O₆
4. H₂S₂O₈

### Step 2: Analyze H₂S₂O₃
- **Structure**: In H₂S₂O₃, the structure can be represented as:
- Sulfur (S) is bonded to another sulfur (S) with a double bond.
- Each sulfur is also bonded to hydroxyl (OH) groups and a double-bonded oxygen (O).
- **Linkage**: There is no -O-O- linkage present in this structure.

### Step 3: Analyze H₂S₂O₅
- **Structure**: For H₂S₂O₅:
- The structure consists of two sulfur atoms connected by a double bond.
- Each sulfur is bonded to double-bonded oxygens and hydroxyl (OH) groups.
- **Linkage**: There is no -O-O- linkage in this oxoacid either.

### Step 4: Analyze H₂S₂O₆
- **Structure**: In H₂S₂O₆:
- Similar to the previous oxoacids, it has two sulfur atoms connected by a double bond.
- Each sulfur is bonded to four double-bonded oxygens and two hydroxyl (OH) groups.
- **Linkage**: This oxoacid also does not contain an -O-O- linkage.

### Step 5: Analyze H₂S₂O₈
- **Structure**: In H₂S₂O₈:
- The structure includes two sulfur atoms, each bonded to two oxygen atoms.
- Importantly, there is a direct -O-O- linkage between the two sulfur atoms.
- **Linkage**: This oxoacid contains an -O-O- linkage.

### Conclusion
After analyzing all the given oxoacids, we find that **H₂S₂O₈** is the only oxoacid of sulfur that contains an -O-O- linkage.

### Final Answer
The oxoacid of sulfur that has an -O-O- linkage is **H₂S₂O₈**.

---