In ccp arrangement the pattern of successive layers can be designated as

Options

A. AB AB AB
B. ABC ABC ABC
C. AB ABC AB
D. ABA ABA ABA

Answer

To solve the question regarding the pattern of successive layers in the cubic close packing (CCP) arrangement, we will break it down step by step.

### Step-by-Step Solution:

1. **Understanding CCP Arrangement**:
- The cubic close packing (CCP) arrangement is also known as face-centered cubic (FCC) arrangement. In this structure, the atoms are packed closely together to maximize space efficiency.

2. **Visualizing the Structure**:
- In a CCP or FCC structure, the atoms are located at the corners of the cube and at the centers of each face of the cube. This arrangement allows for a high packing efficiency.

3. **Layer Arrangement**:
- The layers in the CCP arrangement are stacked in a specific sequence. The first layer can be designated as 'A'.

4. **Stacking the Layers**:
- The second layer is placed in such a way that it fits into the gaps of the first layer. This layer is designated as 'B'.
- The third layer is then placed in a way that fits into the gaps of the second layer, and this layer is designated as 'C'.

5. **Repeating the Pattern**:
- After the third layer (C), the pattern repeats itself. Thus, the sequence of layers continues as A, B, C, A, B, C, and so on.

6. **Conclusion**:
- Therefore, the pattern of successive layers in the CCP arrangement can be designated as A, B, C, A, B, C...

### Final Answer:
The pattern of successive layers in the CCP arrangement is A, B, C, A, B, C...