Which of the following halide is soluble in water ?

Options

A. `AgF`
B. `AgCl`
C. `AgBr`
D. `AgI`

Answer

To determine which of the following halides is soluble in water, we will analyze each option provided: AgF, AgCl, AgBr, and AgI.

### Step-by-Step Solution:

1. **Identify the Halides**: The given options are:
- AgF (Silver Fluoride)
- AgCl (Silver Chloride)
- AgBr (Silver Bromide)
- AgI (Silver Iodide)

2. **Understand Solubility Rules**: Generally, the solubility of salts in water can be predicted based on certain rules. For halides:
- Most halides are soluble in water, but there are exceptions, especially with silver, lead, and mercury halides.

3. **Analyze Each Halide**:
- **AgF (Silver Fluoride)**: Silver fluoride is known to be soluble in water. This is due to the high electronegativity of fluorine, which allows it to interact favorably with water molecules.
- **AgCl (Silver Chloride)**: Silver chloride is not soluble in water. It precipitates out as a solid when mixed with water.
- **AgBr (Silver Bromide)**: Similar to AgCl, silver bromide is also not soluble in water and will precipitate.
- **AgI (Silver Iodide)**: Silver iodide is also insoluble in water and will form a precipitate.

4. **Conclusion**: Among the halides listed, only AgF is soluble in water. The other halides (AgCl, AgBr, and AgI) are insoluble.

### Final Answer:
**AgF is the only halide that is soluble in water.**

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