Element showing the phenomenon of allotropy is

Options

A. Aluminium
B. Zinc
C. Carbon
D. Copper

Answer

To determine which element shows the phenomenon of allotropy, we need to understand what allotropy is and then analyze the given elements.

### Step-by-Step Solution:

1. **Define Allotropy**: Allotropy is the existence of an element in two or more different physical forms in the same physical state. These different forms are known as allotropes.

2. **Identify Elements**: The elements mentioned in the transcript are aluminum, zinc, carbon, and copper.

3. **Analyze Each Element**:
- **Aluminum**: Aluminum does not exhibit allotropy. It exists in a single physical form.
- **Zinc**: Zinc also does not exhibit allotropy. It has a single crystalline structure.
- **Copper**: Copper does not show allotropy. It exists in one form.
- **Carbon**: Carbon is a classic example of an element that exhibits allotropy. It has several allotropes, including diamond, graphite, and fullerenes.

4. **Conclusion**: Among the elements listed, carbon is the one that shows the phenomenon of allotropy due to its multiple physical forms.

### Final Answer:
The element showing the phenomenon of allotropy is **Carbon**.