In which of the following bond angle is maximum

Options

A. `NH_3`
B. `NH_4^+`
C. `PCl_3`
D. `SCl_2`

Explanation

To determine which of the given compounds has the maximum bond angle, we will analyze each compound one by one, focusing on their molecular geometries and bond angles.

### Step-by-Step Solution:

1. **Analyze NH3 (Ammonia)**:
- NH3 has a pyramidal geometry due to the presence of a lone pair of electrons on the nitrogen atom.
- The hybridization of nitrogen in NH3 is sp³.
- The bond angle in NH3 is approximately **107 degrees**.

2. **Analyze NH4+ (Ammonium Ion)**:
- NH4+ has a tetrahedral geometry because it has no lone pairs on the nitrogen atom.
- The hybridization of nitrogen in NH4+ is also sp³.
- The bond angle in NH4+ is approximately **109.5 degrees**.

3. **Analyze PCl3 (Phosphorus Trichloride)**:
- PCl3 has a trigonal pyramidal geometry due to the presence of a lone pair on the phosphorus atom.
- The hybridization of phosphorus in PCl3 is sp³.
- The bond angle in PCl3 is less than 109 degrees, approximately **97 degrees**.

4. **Analyze SCl2 (Sulfur Dichloride)**:
- SCl2 has a bent molecular geometry due to the presence of two lone pairs on the sulfur atom.
- The hybridization of sulfur in SCl2 is sp³.
- The bond angle in SCl2 is approximately **103 degrees**.

5. **Comparison of Bond Angles**:
- NH3: 107 degrees
- NH4+: 109.5 degrees
- PCl3: 97 degrees
- SCl2: 103 degrees

6. **Conclusion**:
- Among the given compounds, the maximum bond angle is found in **NH4+**, which is **109.5 degrees**.

### Final Answer:
The compound with the maximum bond angle is **NH4+** (Ammonium Ion) with a bond angle of approximately **109.5 degrees**.

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