How many lattice points are there ...

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
  • 1 answers

Gaurav Seth 9 months, 1 week ago

(i) Face–centred cubic:-
A face–centred cubic (fcc) unit cell contains atoms at all the corners and at the centre of all the faces of the cube.

So lattice point at the corner = 8
Lattice point at the center of all faces = 6
Total number of lattice point = 14

(ii) Face–centred tetragonal
lattice point at the corner = 8
Lattice point at the center of all faces = 6
Total number of lattice point = 14

(iii) Body–centred
In Body centered cubic there are 8 lattice point at the corner and 1 is at the center so total 8+1 =9 lattice point

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