Question

What are the number of voids present in tetrahedral and octahedra​

Answer 1

Answer:

we should note that the primitive unit cell of the HCP structure contains two atoms. Thus the previous answers per atom have to be multiplied by 2 to get answers per unit cell. So there are 4 tetrahedral voids and two octahedral voids per primitive unit cell of the HCP structure.

Explanation:

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