Which of the following represents calcium chlorite ?

Options

A. `CaClO_2`
B. `Ca(ClO_4)_2`
C. `Ca(ClO_3)_2`
D. `Ca(ClO_2)_2`

Explanation

To determine the correct representation of calcium chlorite, we will follow these steps:

### Step 1: Identify the ions involved
Calcium chlorite is formed from calcium ions (Ca²⁺) and chlorite ions (ClO₂⁻).

**Hint:** Remember that calcium typically has a +2 charge and chlorite has a -1 charge.

### Step 2: Determine the charge balance
To achieve charge neutrality in the compound, we need to balance the charges of the calcium and chlorite ions. Since calcium has a +2 charge, we will need two chlorite ions to balance this.

**Hint:** Use the concept of charge balance to determine how many of each ion are needed.

### Step 3: Write the formula
The formula for calcium chlorite can be derived by combining the ions. Since we need two chlorite ions for one calcium ion, the formula becomes Ca(ClO₂)₂.

**Hint:** When combining ions, ensure that the total positive charge equals the total negative charge.

### Step 4: Check the options
Now, we need to check the provided options to see which one corresponds to Ca(ClO₂)₂.

1. If an option shows CaClO₂, it is incorrect.
2. If an option shows Ca(ClO₂)₂, it is correct.
3. If an option shows any other combination, it is incorrect.

**Hint:** Look for the correct representation of the compound in the options provided.

### Conclusion
The correct representation of calcium chlorite is Ca(ClO₂)₂.

**Final Answer:** Ca(ClO₂)₂