# NEET Chemistry The Solid State Questions Solved

In the unit cell of an fcc system the number of octahedral and tetrahedral holes are

(A) 4,4

(B) 4, 8

(C) 1, 8

(D) 4, 1

(B). In an fcc system, number of atoms in the unit cell is ,
At the corners $8×\frac{1}{8}=1$

At the face centres $6×\frac{1}{2}=3$

Total = 4
For each atom there is one octahedral void and two tetrahedral voids.

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