`S_(8)` ring of both rhombic sulphur and monoclinic sulphur has crown shaped structure . The S- S -S bond angle in `S_(8)` ring is

Options

A. `109^(@)` 28'
B. `107^(@)`
C. `104^(@)`
D. `120^(@)`

Answer

To determine the S-S-S bond angle in the S8 ring of both rhombic sulfur and monoclinic sulfur, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Structure of S8**:
- The S8 molecule consists of eight sulfur atoms arranged in a crown-shaped structure. This structure is common to both rhombic sulfur and monoclinic sulfur.

2. **Visualizing the Crown Shape**:
- In the crown-shaped structure, the sulfur atoms are connected in a cyclic manner. Each sulfur atom is bonded to two other sulfur atoms, forming a ring.

3. **Identifying the Bond Angles**:
- The bond angle we are interested in is the angle formed between two sulfur atoms connected to a third sulfur atom (S-S-S).

4. **Determining the S-S-S Bond Angle**:
- Based on the molecular geometry of the S8 ring, the S-S-S bond angle has been established through structural analysis and is found to be approximately 107 degrees.

5. **Final Answer**:
- Therefore, the S-S-S bond angle in the S8 ring is **107 degrees**.