Question

How many lattice points are there in one unit cell of each of the following lattice? (i) Face-centred cubic (ii) Face-centred tetragonal (iii) Body-centred

Answer 1

In a face-centred cubic lattice, there are total 14 lattice points out of which 6 lattice points are in the face and the rest 8 lattice points are in the corners.

In a face-centred tetragonal lattice, there are total 14 lattice points out of which 6 lattice points are in the face and the rest 8 lattice points are in the corners.

In a body-centred tetragonal lattice, there are total 9 lattice points out of which 1 lattice points are in the face and the rest 8 lattice points are in the corners.