JEE Main Chemistry question

Not in JEE Main or NEET syllabus

Number of atoms in the unit cell of Na (bcc type crystal) and Mg (fcc type crystal) are respectively

(A)4, 4
(B)4, 2
(C)2, 4Correct
(D)1, 1

Answer: (C)

Solution

Sodium crystallises in a body-centred cubic (bcc) lattice, which contains atoms per unit cell. Magnesium, taken here as a face-centred cubic (fcc) lattice,

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Question ID VK-141539