Which of the following is a metalloid?

Options

A. K
B. Ge
C. Ce
D. Zn

Answer

To determine which of the given options is a metalloid, we need to identify the metalloids from the periodic table and then check the options provided.

### Step-by-Step Solution:

1. **Identify Metalloids**:
Metalloids are elements that have properties intermediate between metals and non-metals. In the periodic table, the common metalloids include:
- Boron (B)
- Silicon (Si)
- Germanium (Ge)
- Arsenic (As)
- Antimony (Sb)
- Tellurium (Te)
- Polonium (Po)

2. **Review the Given Options**:
Let's assume the options provided are:
- Option 1: Potassium (K)
- Option 2: Germanium (Ge)
- Option 3: Cerium (Ce)
- Option 4: Zinc (Zn)

3. **Analyze Each Option**:
- **Option 1: Potassium (K)** - This is an alkali metal and not a metalloid.
- **Option 2: Germanium (Ge)** - This is a metalloid.
- **Option 3: Cerium (Ce)** - This is a lanthanide and not a metalloid.
- **Option 4: Zinc (Zn)** - This is a transition metal and not a metalloid.

4. **Conclusion**:
The only option that is a metalloid is **Option 2: Germanium (Ge)**.

### Final Answer:
**The metalloid among the given options is Germanium (Ge).**

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