The correct order of acidity of oxoacids of halogens is

Options

A. `HCIO lt HCIO_(2) lt HClO_(3) lt HClO_(4)`
B. `HClO_(4) lt HCIO_(3) lt HClO_(2) lt HCIO`
C. `HCIO lt HCIO_(4) lt HClO_(3) lt HCIO_(2)`
D. `HClO_(4) lt HClO_(2) lt HClO_(3) lt HCIO`

Explanation

To determine the correct order of acidity of oxoacids of halogens, we will analyze the given oxoacids: HClO, HClO2, HClO3, and HClO4. The acidity of these oxoacids can be assessed by examining the oxidation state of the central atom (chlorine) and the stability of their conjugate bases.

### Step-by-Step Solution:

1. **Identify the Oxoacids**: The oxoacids we are considering are HClO, HClO2, HClO3, and HClO4.

2. **Determine the Oxidation State of Chlorine**:
- For HClO:
- Let the oxidation state of Cl be \( x \).
- The equation is: \( 1 + x - 2 = 0 \) (since O is -2).
- Solving gives \( x = +1 \).
- For HClO2:
- Equation: \( 1 + x - 4 = 0 \) (2 O's contribute -4).
- Solving gives \( x = +3 \).
- For HClO3:
- Equation: \( 1 + x - 6 = 0 \) (3 O's contribute -6).
- Solving gives \( x = +5 \).
- For HClO4:
- Equation: \( 1 + x - 8 = 0 \) (4 O's contribute -8).
- Solving gives \( x = +7 \).

3. **List the Oxidation States**:
- HClO: +1
- HClO2: +3
- HClO3: +5
- HClO4: +7

4. **Assess Stability of Conjugate Bases**:
- The conjugate bases of these acids are ClO^-, ClO2^-, ClO3^-, and ClO4^-.
- As the oxidation state of chlorine increases, the stability of the conjugate base also increases because higher oxidation states lead to a greater ability to stabilize negative charge.

5. **Relate Stability to Acidity**:
- A more stable conjugate base corresponds to a stronger acid. Therefore, the order of acidity is inversely related to the oxidation state of chlorine.
- The order of acidity based on the stability of the conjugate bases is:
- HClO < HClO2 < HClO3 < HClO4

6. **Conclusion**:
- The correct order of acidity of the oxoacids of halogens is:
- **HClO < HClO2 < HClO3 < HClO4**

### Final Answer:
The correct order of acidity of oxoacids of halogens is HClO < HClO2 < HClO3 < HClO4.