(x) Regions in which metals are found in earth is called

Options

A. Lithophile
B. Atmophile
C. Calcophile
D. Siderophile

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks for the term that describes regions in which metals are found in the Earth.

2. **Identifying the Options**: The options provided are lithophile, etmophile, calcophile, and siderophile. We need to analyze what each term means.

3. **Defining the Terms**:
- **Lithophile**: Refers to elements that are found in the Earth's crust and are associated with silicate minerals.
- **Etmophile**: This term is not commonly used in geology or chemistry, and may be a typographical error or misinterpretation.
- **Calcophile**: Refers to elements that have a strong affinity for sulfur and are often found in sulfide minerals.
- **Siderophile**: Refers to elements that have a strong affinity for iron and are typically found in the Earth's core.

4. **Analyzing the Context**: The video transcript explains that the Earth has different layers: the crust, the silicate layer, the sulfur layer, and the iron core. It specifically mentions that metals are found in the iron core, which corresponds to the term "siderophile".

5. **Conclusion**: Based on the definitions and the context provided, the correct answer to the question is that the regions in which metals are found in the Earth are called **siderophile**.

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