Stacking of square close packed layers give rise to:

Options

A. bcc structure
B. fcc structure
C. Simple cubic structure
D. hcp structur

Answer

To solve the question about what structure is formed by stacking square close-packed layers, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Square Close Packing**:
- Square close packing refers to a two-dimensional arrangement of spheres (atoms) where each atom is surrounded by four other atoms in a square arrangement.

2. **Visualizing the Arrangement**:
- In a square close-packed layer, if we visualize the arrangement, we can see that each atom is at the corners of a square, and there is one atom in the center of the square.

3. **Stacking Layers**:
- When we stack these square close-packed layers on top of each other, we need to consider how the layers interact. Each atom in the layer above will sit directly above the atoms in the layer below.

4. **Determining the Coordination Number**:
- In this arrangement, each atom is surrounded by four other atoms in the same layer and one atom directly above it, giving it a coordination number of 4.

5. **Identifying the Resulting Structure**:
- The stacking of these square close-packed layers leads to a three-dimensional arrangement that resembles a simple cubic structure. This is because the atoms in each layer align directly above those in the layer below, forming a cubic lattice.

6. **Conclusion**:
- Therefore, stacking square close-packed layers gives rise to a simple cubic structure.

### Final Answer:
The stacking of square close-packed layers gives rise to a **simple cubic structure**.

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