Problem VII.B


Using Figure VII.B.2,

  1. Calculate the number of spheres in an fcc unit cell. Note that corners are shared by 8 unit cells, while faces are shared by 2 unit cells.
    Answer: 4.

  2. Calculate the number of octahedral holes per unit cell. Note that the edges are shared by 4 unit cells.
    Answer: 4.

  3. Calculate the number of tetrahedral holes per unit cell.
    Answer: 8.


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