Answer:
Cubic close packed structure contains one
atom at each corner of an unit cell and at face
centre of each unit cell. Each unit cell
consists of 8 small cubes.
Each small cube contains 4 atoms
at its alternate corner when these atoms are joined to each other lead to
creation of a tetrahedral void as shown below
Since, there are total 8 smaller
cubes present at one unit cell and each smaller cube has one
tetrahedral void hence, total
number of tetrahedral void present in each unit cell is equal to eight.
As we know ccp structure has 4
atoms per unit cell. Thus, total number of tetrahedral void in
one ccp unit cell is equal to 8.
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