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Question
The total number of tetrahedral voids in the face-centered unit cell is ______.
Options
6
8
10
12
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Solution
The total number of tetrahedral voids in the face-centered unit cell is 8.
Explanation:
Fee unit cell contains 8 tetrahedral voids at centre of each 8 smaller cube of a unit cell as shown below
Eight tetrahedral voids per fee unit vell
Each cube represented by numeric 1, 2, 3, 4, 5, 6, 7, 8 contains one tetrahedral void.
Each cube contains one tetrahedral void its body centre as shown above
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