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Q.

The number of lattice points at the centre of the primitive unit cell is

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a

2

b

3

c

1

d

0

answer is D.

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Detailed Solution

Atoms are only found at the corners of the primitive cubic unit cell. Each atom in the corner is shared by eight adjacent unit cells. Hence,  lattice points at the center of the primitive unit cell is equal to zero in number, making option D) the correct option.

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