What type of lattice is found in potassium chloride crystal ?

Options

A. Face centred cubic
B. Body centred cubic
C. Simple cubic
D. Simple tetragonal

Answer

To determine the type of lattice found in potassium chloride (KCl) crystals, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Ions in KCl**:
- Potassium chloride consists of two types of ions: potassium ions (K⁺) and chloride ions (Cl⁻).

2. **Understand the Crystal Structure**:
- KCl crystallizes in a specific arrangement. The chloride ions (Cl⁻) form the primary structure of the lattice.

3. **Determine the Arrangement of Chloride Ions**:
- In the KCl crystal, the chloride ions are arranged in a face-centered cubic (FCC) lattice. This means that the Cl⁻ ions are located at the corners and the centers of each face of the cubic unit cell.

4. **Identify the Position of Potassium Ions**:
- The potassium ions (K⁺) occupy the octahedral voids within the FCC lattice formed by the chloride ions. In an FCC lattice, octahedral voids are located at the body center and at the edge centers of the cube.

5. **Conclusion**:
- Since the chloride ions form a face-centered cubic lattice and the potassium ions occupy the octahedral voids, we conclude that the type of lattice found in potassium chloride is a face-centered cubic lattice.

### Final Answer:
The type of lattice found in potassium chloride (KCl) crystal is a **face-centered cubic (FCC) lattice**.

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