Which of the following oxyacid contains both P-H and P-P bond siultaneously?

Options

A. `H_(4)P_(2)O_(5)`
B. `H_(4)P_(2)O_(7)`
C. `H_(4)P_(2)O_(6)`
D. None

Explanation

To determine which of the given oxyacids contains both P-H and P-P bonds simultaneously, we need to analyze the structures of each of the acids provided in the options.

### Step-by-Step Solution:

1. **Identify the Oxyacids**: The options given are:
- H₄P₂O₅ (Pyrophosphorus acid)
- H₄P₂O₇ (Pyrophosphoric acid)
- H₄P₂O₆ (Hyperphosphoric acid)
- None

2. **Analyze H₄P₂O₅ (Pyrophosphorus acid)**:
- Structure: H₄P₂O₅ has two phosphorus atoms connected by an oxygen atom.
- Bonds: It contains P-H bonds (from the hydrogen atoms) but does not have a P-P bond.
- Conclusion: Does not satisfy the condition.

3. **Analyze H₄P₂O₇ (Pyrophosphoric acid)**:
- Structure: H₄P₂O₇ also has two phosphorus atoms, with multiple hydroxyl (OH) groups.
- Bonds: It contains P-H bonds (from the hydroxyl groups) but does not have a P-P bond.
- Conclusion: Does not satisfy the condition.

4. **Analyze H₄P₂O₆ (Hyperphosphoric acid)**:
- Structure: H₄P₂O₆ has two phosphorus atoms with double bonds to oxygen and hydroxyl groups.
- Bonds: It contains a P-P bond (between the two phosphorus atoms) but does not have a P-H bond.
- Conclusion: Does not satisfy the condition.

5. **Final Conclusion**:
- After analyzing all three oxyacids, none of them contain both P-H and P-P bonds simultaneously.
- Therefore, the correct answer is **None of these**.

### Final Answer:
The oxyacid that contains both P-H and P-P bonds simultaneously is **None of these**.