Oxygen is more electronegative than chloride. In the series of oxyacids HOCI, `HCIO_(2)`, `HCIO_(3)` and `HCIO_(4)`, an increasing number of oxygen atom is bonded to the chlorine atom. Chlorine forms a number of oxyacids which differ in their stability order.
The order if acid strength og HOCI, `HCIO_(2)`, `HCIO_(3)` and `HCIO_(4)` are

Options

A. `HCIO_(4)gtHCIO_(3)gtHCIO_(2)gtHOCI`
B. `HOCIgtHCIO_(2)gtHCIO_(3)gtHCIO_(4)`
C. `HCIO_(3)gtHCIO_(4)gtHCIO_(2)gtHOCI`
D. `HCIO_(3)gtHCIO_(2)gtHOCIgtHCIO_(4)`

Answer

To determine the order of acidic strength for the oxyacids HClO, HClO₂, HClO₃, and HClO₄, we can follow these steps:

### Step 1: Identify the Oxyacids and Their Structures
- HClO (Hypochlorous acid)
- HClO₂ (Chlorous acid)
- HClO₃ (Chloric acid)
- HClO₄ (Perchloric acid)

### Step 2: Understand the Relationship Between Oxygen Atoms and Acid Strength
The strength of oxyacids is generally proportional to the number of oxygen atoms bonded to the central atom (in this case, chlorine). More oxygen atoms typically lead to greater acidic strength.

### Step 3: Count the Oxygen Atoms
- HClO has 1 oxygen atom.
- HClO₂ has 2 oxygen atoms.
- HClO₃ has 3 oxygen atoms.
- HClO₄ has 4 oxygen atoms.

### Step 4: Determine the Oxidation States of Chlorine in Each Acid
- In HClO, the oxidation state of chlorine is +1.
- In HClO₂, the oxidation state of chlorine is +3.
- In HClO₃, the oxidation state of chlorine is +5.
- In HClO₄, the oxidation state of chlorine is +7.

### Step 5: Analyze the Relationship Between Oxidation State and Acid Strength
Higher oxidation states of chlorine correspond to stronger acids. Thus, we can conclude that:
- HClO₄ (Cl in +7) > HClO₃ (Cl in +5) > HClO₂ (Cl in +3) > HClO (Cl in +1)

### Step 6: Establish the Order of Acid Strength
Based on the number of oxygen atoms and the oxidation states, we can establish the order of acidic strength:
- HClO₄ > HClO₃ > HClO₂ > HClO

### Final Answer
The order of acid strength for the oxyacids HClO, HClO₂, HClO₃, and HClO₄ is:
**HClO₄ > HClO₃ > HClO₂ > HClO**

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