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Na and Mg crystallize in bcc- and fcc-ty...

`Na` and `Mg` crystallize in bcc- and fcc-type crystals, respectively, then the number of atoms of `Na` and `Mg` present in the unit cell of their respective crystal is

A

4,4

B

4,2

C

2,4

D

1,1

Text Solution

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Number of atoms in unit cell of Na are 2 (bcc). Number of atoms in unit cell of Mg (fcc) are 4.
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