Which will show maximum non-metallic character

Options

A. B
B. Be
C. Mg
D. Al

Answer

To determine which element among boron, beryllium, magnesium, and aluminum shows the maximum non-metallic character, we can follow these steps:

### Step 1: Understand Non-Metallic Character
Non-metallic character refers to the tendency of an element to gain electrons and form negative ions (anions). Non-metals are typically found on the right side of the periodic table, while metals are on the left side.

### Step 2: Analyze the Position of Elements
1. **Boron (B)** - Located in Group 13 (p-block).
2. **Beryllium (Be)** - Located in Group 2 (s-block).
3. **Magnesium (Mg)** - Located in Group 2 (s-block).
4. **Aluminum (Al)** - Located in Group 13 (p-block).

### Step 3: Apply the Trend of Non-Metallic Character
- Non-metallic character **increases** from left to right across a period and **decreases** from top to bottom within a group.
- Among the given elements, boron and aluminum are non-metals, while beryllium and magnesium are metals.

### Step 4: Compare Non-Metallic Character
- **Boron**: Being a metalloid, it has more non-metallic character compared to metals.
- **Beryllium and Magnesium**: Both are metals and exhibit less non-metallic character.
- **Aluminum**: While it is a metal, it is less metallic than beryllium and magnesium but still more metallic than boron.

### Conclusion
Among boron, beryllium, magnesium, and aluminum, **boron** shows the maximum non-metallic character.

### Final Answer
**Boron** shows the maximum non-metallic character.

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