The metallic compounds of which among the following metals is involved in cloud seeding?

Options

A. mercury
B. aluminium
C. copper
D. silver

Explanation

To solve the question about which metallic compound is involved in cloud seeding, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Cloud Seeding**:
- Cloud seeding is a technique used to enhance precipitation (rainfall) by introducing certain substances into the atmosphere.

2. **Identify the Purpose of Cloud Seeding**:
- The main goal of cloud seeding is to increase the amount of rainfall by providing clouds with additional particles that can serve as nuclei for raindrop formation.

3. **Research Common Compounds Used in Cloud Seeding**:
- Various substances can be used for cloud seeding, but one of the most common metallic compounds is silver iodide.

4. **Confirm the Metallic Compound**:
- Silver iodide (AgI) is known for its effectiveness in cloud seeding as it can help to form ice crystals in supercooled clouds, which leads to increased precipitation.

5. **Conclude the Answer**:
- The metallic compound involved in cloud seeding is silver iodide.

### Final Answer:
The metallic compound involved in cloud seeding is **silver iodide**.

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