The total number of tetrahedral voids in the face-centered unit cell is ______.

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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 [Solution diagram: 252061_solution_1.png] [Solution diagram: 252061_solution_2.png] [Solution diagram: 252061_solution_3.png]

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