Number of tetrahedral void completely inside a BCC metallic crystal is:

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Solution

The correct option is A 0
In BCC cell, 4 tetrahedral voids are preset on each of the face . But none of the voids are present inside it.
Four tetrahedral sites on each of the six BCC cell faces $(\frac{1}{2}, \frac{1}{4}, 0)$ .
Therefore, no tetrahedral void is completely present inside a BCC metallic crystal.

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