Among group `13` elements the one forming an amphoteric oxide is

Options

A. Tl
B. Al
C. B
D. In

Answer

To determine which element among the group 13 elements forms an amphoteric oxide, we can analyze the oxides of each element in this group.

### Step-by-Step Solution:

1. **Identify Group 13 Elements**: The elements in group 13 of the periodic table are Boron (B), Aluminum (Al), Gallium (Ga), Indium (In), and Thallium (Tl).

2. **List Their Oxides**: The oxides formed by these elements are:
- Boron: B₂O₃
- Aluminum: Al₂O₃
- Gallium: Ga₂O₃
- Indium: In₂O₃
- Thallium: Tl₂O₃

3. **Determine the Nature of Each Oxide**:
- **Boron Oxide (B₂O₃)**: This oxide is weakly acidic because boron is a nonmetal.
- **Aluminum Oxide (Al₂O₃)**: This oxide is amphoteric, meaning it can react with both acids and bases.
- **Gallium Oxide (Ga₂O₃)**: This oxide is also amphoteric.
- **Indium Oxide (In₂O₃)**: This oxide is basic.
- **Thallium Oxide (Tl₂O₃)**: This oxide is strongly basic.

4. **Conclusion**: Among the group 13 elements, both Aluminum (Al) and Gallium (Ga) form amphoteric oxides. However, the question asks for one, and Aluminum oxide (Al₂O₃) is the most commonly recognized amphoteric oxide in this group.

5. **Final Answer**: The element among group 13 that forms an amphoteric oxide is **Aluminum (Al)**.