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

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

A

`4` and `2`

B

`9` and `14`

C

`14` and `9`

D

`2` and `4`

Text Solution

Verified by Experts

The correct Answer is:
B
Number of unit cell for bcc is `2` and fcc is `4`.
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