Pegarding the structure of `SO_(2) and SeO_(2)` which of the following is true-

Options

A. The gaseous `SO_(2)` and `SeO_(2)` have same V - shaped molecule both in solid and gas phase
B. At room temperature both `SO_(2)` and `SeO_(2)` are solids.
C. In the solid phase the structure of `SO_(2)` is V - shaped discrete molecule but `SeO_(2)` is cyclic trimeric
D. In solid phase the sturcture of `SO_(2)` is V - shaped discrete molecule but `SeO_(2)` has linear polymeric chain

Answer

To analyze the structures of \( SO_2 \) and \( SeO_2 \), we will break down the characteristics of each compound step by step.

### Step 1: Analyze the structure of \( SO_2 \)
- **Sulfur Dioxide (\( SO_2 \))**:
- The molecular geometry of \( SO_2 \) is determined by the presence of one sulfur atom bonded to two oxygen atoms.
- The Lewis structure shows that sulfur forms two double bonds with the oxygen atoms, resulting in a bent or V-shaped molecular geometry.
- Additionally, there is one lone pair of electrons on the sulfur atom, which contributes to the V-shape.

### Step 2: Analyze the structure of \( SeO_2 \)
- **Selenium Dioxide (\( SeO_2 \))**:
- The molecular structure of \( SeO_2 \) is different from that of \( SO_2 \).
- At room temperature, \( SeO_2 \) exists as a solid and has a polymeric structure.
- The structure consists of an infinite chain of selenium and oxygen atoms, where selenium forms double bonds with oxygen, leading to a non-planar infinite chain structure.

### Step 3: Compare the structures of \( SO_2 \) and \( SeO_2 \)
- **Comparison**:
- \( SO_2 \) is a V-shaped molecule in both solid and gaseous forms, characterized by discrete molecular units.
- In contrast, \( SeO_2 \) is a solid at room temperature and has a linear polymeric chain structure, not a discrete molecule.

### Conclusion:
Based on the analysis:
- The correct statement is that in the solid phase, the structure of \( SO_2 \) is V-shaped and discrete, while \( SeO_2 \) has a linear polymeric chain structure.

### Final Answer:
The correct option is that \( SO_2 \) is V-shaped and discrete, while \( SeO_2 \) has a linear polymeric chain structure.

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