Statement-1: `HNO_(4)` acid never exists.
Statement-2: `H_(2)S_(2)O_(3)` is a thionic acid.
Statement-3: `H_(2)S_(2)O_(7)` contain S-S bond.

Options

A. TFT
B. FTF
C. FTT
D. FFF

Answer

To analyze the statements provided in the question, we will evaluate each statement one by one.

### Step 1: Evaluate Statement 1
**Statement 1**: HNO₄ acid never exists.

- **Analysis**: HNO₄ is known as peroxy nitric acid. It has a structure that includes a peroxy linkage (–O–O–) and is indeed a recognized compound. Therefore, HNO₄ does exist.

- **Conclusion**: This statement is **false**.

### Step 2: Evaluate Statement 2
**Statement 2**: H₂S₂O₃ is a thionic acid.

- **Analysis**: H₂S₂O₃, also known as thiosulfuric acid, contains a sulfur-sulfur (S-S) bond in its structure. It is classified as a thionic acid because it has sulfur in its molecular structure and exhibits properties characteristic of thionic acids.

- **Conclusion**: This statement is **true**.

### Step 3: Evaluate Statement 3
**Statement 3**: H₂S₂O₇ contains a sulfur-sulfur bond.

- **Analysis**: H₂S₂O₇ is known as disulfuric acid (or oleum). When we analyze its structure, it does not contain a sulfur-sulfur bond. Instead, it has sulfur atoms bonded to oxygen atoms.

- **Conclusion**: This statement is **false**.

### Final Summary of Statements
- Statement 1: **False**
- Statement 2: **True**
- Statement 3: **False**

### Final Answer
The correct answer is: **False, True, False**.

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