Will hcp or ccp for the given element gives the same density? Explain.

Explanation

To determine whether hexagonal close packing (hcp) or cubic close packing (ccp) for a given element gives the same density, we need to analyze the structures of both packing types and how they relate to density.

### Step-by-Step Solution:

1. **Understanding the Packing Types**:
- **Hexagonal Close Packing (hcp)**: In hcp, the arrangement of spheres is such that the first layer (A) is followed by a second layer (B) that fits into the depressions of the first layer. The third layer (A) aligns with the first layer, resulting in an ABAB pattern.
- **Cubic Close Packing (ccp)**: In ccp, the arrangement is different. The first layer (A) is followed by a second layer (B) that fits into the depressions of the first layer, and the third layer (C) fits into the depressions of the second layer. This results in an ABCABC pattern.

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