Question

The number of tetrahedral sites per sphere in ccp structure is,
a) 1 b) 2 c) 3 d) 4

Answer 1

The answer will be two only.

The rule that will follow it up is that the tetrahedral sites will have the sphere of the sites that will be void in the body.

Hence, the total number of tetrahedral sites will be twice to the number of packing sphere.

Hence, the answer will be 2.