This section contains Assertion and Reason type question each question has 4 choices (1)(2)(3)(4) out of which only one is correct
Assertion(A):The structures of `SO_2` and `O_3` are bent
Reason(R):The central atoms of `SO_2` and `O_3` molecules have one lone pair of electrons each on central atoms

Options

A. Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion
C. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect

Answer

To solve the assertion and reason question regarding the structures of \( SO_2 \) and \( O_3 \), we will analyze both the assertion and the reason step by step.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that the structures of \( SO_2 \) (sulfur dioxide) and \( O_3 \) (ozone) are bent.
- To confirm this, we can draw the Lewis structures of both molecules.

2. **Drawing the Lewis Structure of \( SO_2 \)**:
- Sulfur (S) is the central atom, and it is bonded to two oxygen (O) atoms.
- Sulfur has 6 valence electrons, and each oxygen has 6 valence electrons.
- In \( SO_2 \), one of the oxygen atoms forms a double bond with sulfur, while the other forms a single bond.
- This results in one lone pair of electrons remaining on the sulfur atom.
- The presence of this lone pair leads to a bent molecular geometry due to the repulsion between the lone pair and the bonding pairs.

3. **Drawing the Lewis Structure of \( O_3 \)**:
- In ozone, the central atom is also oxygen, with one oxygen atom bonded to the central oxygen via a double bond and the other via a single bond.
- The central oxygen atom has one lone pair of electrons.
- Similar to \( SO_2 \), the lone pair causes the molecule to adopt a bent shape due to the repulsion between the lone pair and the bonding pairs.

4. **Understanding the Reason**:
- The reason states that the central atoms of \( SO_2 \) and \( O_3 \) have one lone pair of electrons each.
- This is indeed true and is a contributing factor to the bent shape of these molecules.

5. **Evaluating the Assertion and Reason**:
- Both the assertion and the reason are correct.
- However, the reason provided does not fully explain why the structures are bent. The bent shape is primarily due to the repulsion between lone pairs and bonding pairs, which is not explicitly mentioned in the reason.

6. **Conclusion**:
- The assertion is true, and the reason is also true, but the reason is not a correct explanation for the assertion. Therefore, the correct choice would be option (2), which states that both the assertion and reason are correct, but the reason is not the correct explanation for the assertion.

### Final Answer:
- The correct choice is (2).