Which of the following is an example of body centred cube ?

Options

A. Mg
B. Zinc
C. Copper
D. Potassium

Answer

To determine which of the given options is an example of a body-centered cubic (BCC) structure, we can follow these steps:

### Step 1: Understand Body-Centered Cubic Structure
A body-centered cubic (BCC) structure is a type of crystal lattice where there is one atom at each corner of the cube and one atom in the center of the cube. This structure is characteristic of certain metals.

### Step 2: Analyze the Given Options
The options provided are:
1. Magnesium (Mg)
2. Zinc (Zn)
3. Copper (Cu)
4. Potassium (K)

### Step 3: Identify the Crystal Structure of Each Element
- **Magnesium (Mg)**: Has a hexagonal close-packed structure.
- **Zinc (Zn)**: Has a hexagonal close-packed structure.
- **Copper (Cu)**: Has a face-centered cubic structure.
- **Potassium (K)**: Exhibits a body-centered cubic structure.

### Step 4: Conclusion
From the analysis, we find that potassium (K) is the only element among the given options that has a body-centered cubic structure.

### Final Answer
The correct answer is **Potassium (K)**.

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