In the cubic close packing,
Question:

In the cubic close packing, the unit cell has ________.

(i) 4 tetrahedral voids each of which is shared by four adjacent unit cells.

(ii) 4 tetrahedral voids within the unit cell.

(iii) 8 tetrahedral voids each of them which are shared by four adjacent unit

cells.

(iv) 8 tetrahedral voids within the unit cells.

Solution:

Option (iv)  8 tetrahedral voids within the unit cells is the answer.

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