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NCERT Class XII Chemistry
Chapter - The Solid State
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Question : 8 of 50
Marks: +1, -0
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
Solution:  
Lattice points in face-centred cubic or face-centred tetragonal
      \;\;\;= 8 (at corners) + 6 (at face-centres) = 14
Lattice points in body-centred cube
      \;\;\;= 8 (at corners) + 1 (at body-centre) = 9
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