Which of the following elements isametalloid?

Options

A. Lead
B. Tin
C. Antimony
D. Barium

Explanation

To determine which of the given elements is a metalloid, we need to follow these steps:

### Step 1: Understand the Classification of Elements
Elements are classified into three categories: metals, non-metals, and metalloids (also known as semi-metals).

### Step 2: Identify the Properties
- **Metals**: Good conductors of heat and electricity, malleable, ductile.
- **Non-metals**: Poor conductors (insulators), brittle in solid form, not malleable or ductile.
- **Metalloids**: Have properties intermediate between metals and non-metals; they are semi-conductors.

### Step 3: List the Given Elements
The elements provided in the question are:
1. Silicon
2. Germanium
3. Antimony
4. Barium

### Step 4: Classify Each Element
- **Silicon**: Metalloid
- **Germanium**: Metalloid
- **Antimony**: Metalloid
- **Barium**: Metal

### Step 5: Identify the Metalloid
From the classification:
- Silicon, Germanium, and Antimony are metalloids.
- Barium is a metal.

### Conclusion
The answer to the question "Which of the following elements is a metalloid?" is **Antimony**.

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