Assertion. Ozone is a powerful oxidising agent in comparison to `O_(2)`
Reason. Ozone is diamagnetic but `O_(2)` is paramagnetic.

Options

A. If both assertion and reason are true, and reason is the correct explanation of the assertion.
B. If both assertion and reason are ture, but reason is not the correct explanantion of the assertion.
C. If assertion is true, but reason is false.
D. If both assertion and reason are false

Explanation

To analyze the assertion and reason provided in the question, we will break it down into steps.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that ozone (O₃) is a powerful oxidizing agent compared to molecular oxygen (O₂).
- To evaluate this, we need to understand the properties of ozone and how it acts as an oxidizing agent.

2. **Properties of Ozone**:
- Ozone is known for its strong oxidizing properties. It can readily react with various substances, facilitating oxidation reactions.
- Ozone can dissociate into molecular oxygen (O₂) and atomic oxygen (O), with the atomic oxygen being highly reactive and capable of oxidizing other substances.

3. **Understanding the Reason**:
- The reason provided states that ozone is diamagnetic while O₂ is paramagnetic.
- Diamagnetic substances have all their electrons paired, while paramagnetic substances have unpaired electrons.

4. **Evaluating the Magnetic Properties**:
- Ozone (O₃) has a structure where all electrons are paired, making it diamagnetic.
- Molecular oxygen (O₂) has two unpaired electrons in its π* antibonding orbitals, which makes it paramagnetic.

5. **Linking the Assertion and Reason**:
- While the reason discusses the magnetic properties of ozone and O₂, it does not directly explain why ozone is a more powerful oxidizing agent.
- The assertion is true, but the reason provided does not support the assertion effectively.

6. **Conclusion**:
- The assertion is correct: ozone is indeed a more powerful oxidizing agent than O₂.
- However, the reason is not a valid explanation for the assertion, as the magnetic properties do not determine the oxidizing strength.

### Final Answer:
- Assertion: True
- Reason: False