Ozone depleton due to the fomation of following compound in Antarctica

Options

A. Acrolein
B. PAN
C. PCBs
D. Chlorine nitrate

Explanation

### Step-by-Step Solution:

1. **Understanding Ozone Depletion**: Ozone depletion refers to the thinning of the ozone layer in the Earth's stratosphere, which is crucial for absorbing the majority of the sun's harmful ultraviolet radiation.

2. **Identifying the Compounds**: The question mentions several compounds, but we need to focus on those that are known to contribute to ozone depletion, particularly in the Antarctic region.

3. **Chlorine Nitrate (ClNO3)**: Among the compounds mentioned, chlorine nitrate (ClNO3) is identified as a significant contributor to ozone depletion. It is a highly reactive substance that can lead to the breakdown of ozone (O3) molecules.

4. **Formation of Chlorine Radicals**: When chlorine nitrate is present, it can release chlorine radicals (ClO•) when it reacts with other substances. These chlorine radicals are extremely reactive and can destroy ozone molecules.

5. **Chemical Reactions**:
- Chlorine nitrate can react to form chlorine monoxide (ClO•) and nitrogen dioxide (NO2).
- The reaction can be simplified as follows:
\[ \text{ClNO}_3 \rightarrow \text{ClO}• + \text{NO}_2 \]
- The chlorine monoxide can further react with ozone:
\[ \text{ClO}• + \text{O}_3 \rightarrow \text{Cl}• + \text{2O}_2 \]
- Here, the chlorine radical (Cl•) can continue to react with more ozone, leading to further depletion.

6. **Conclusion**: The presence of chlorine nitrate in Antarctica is a significant factor leading to ozone depletion due to its ability to release chlorine radicals, which repeatedly destroy ozone molecules.