`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 isA. 4 and 2B. 9 and 14C. 14 and 9D. 2 and 4

`Na` and `Mg` crystallize in bcc- and fcc-type crystals, the ratio of

1.	`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 isA. 4 and 2B. 9 and 14C. 14 and 9D. 2 and 4
Answer» Correct Answer - D In BCC (Na) No. of atoms per unit cell `=8xx1//8+1=2` In FCC. (Mg) No. of atoms per unit cell `=8xx1//8+6xx1//2=4` The number of atoms in unit cells are respectively 2 and 4

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`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 isA. 4 and 2B. 9 and 14C. 14 and 9D. 2 and 4

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