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Question
The correct order of the packing efficiency in different types of unit cells is ______.
Options
fcc < bcc < simple cubic
fcc > bcc > simple cubic
fcc < bcc > simple cubic
bcc < fcc > simple cubi
Solution
The correct order of the packing efficiency in different types of unit cells is fcc > bcc > simple cubic.
Explanation:
Packing efficiency in different types of unit cells can be tabulated as
| Unit cell | Packing efficiency |
| fcc | 74% |
| bcc | 68% |
| Simple cubic | 52% |
Hence, correct order is fee (74%) > bee (68%) > simple cubic (52%).
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