MCQ
The empty space in $\text{hcp}$ and $\text{ccp}$ is about:
- ✓$26\%$
- B$30\%$
- C$35\%$
- D$40\%$
✓
Answer
Correct option: A.
$26\%$
The space occupied by spheres of equal size in three dimensions in both $\text{hcp}$ and $\text{ccp}$ arrangements is $74\%.$
The vacant space is $100 − 74 = 26\%.$
The vacant space is $100 − 74 = 26\%.$
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