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  • A unit cell of a crystal has a face-centred cubic (FCC) lattice with an edge length ofWhat is the total numb

A unit cell of a crystal has a face-centred cubic (FCC) lattice with an edge length of4 \AA .What is the total number of atoms present in the unit cell?

 

Option: 1

4


Option: 2

8


Option: 3

12


Option: 4

16


Answers (1)

best_answer

In an FCC lattice, there are atoms located at each of the eight corners and at the centres of each of the six faces of the cube. Hence, the total number of atoms in the unit cell is given by 8\times\ 1/8 + 6 \times 1/2 = 4 + 3 = 12

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Divya Prakash Singh

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