Question

how many tetrahedral holes are occupied in diamond...?
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Answer 1

Answer:

And in this structure lattice has two tetrahedral bonds. Now, come to the main point, that is each fcc unit contains 8 tetrahedral void which is occupied by a carbon atom, but it occupies only 4. So, 4 the rest is left means 50% are not occupied. Therefore, only 50% tetrahedral voids are occupied in diamond.

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