Question

The total number of atoms in one unit cell of body-centered unit cubic cell is ______ atoms.

(a) 4

(b) 3

(c) 8

(d) 2

I have been asked this question in homework.

Asked question is from Solid State in portion Solid State of Chemistry – Class 12

Answer 1

Correct option is (d) 2

The explanation is: In body-centered cubic unit cell, one atom is present at each of the corners and one atom at its body center.

• 8 corners × \(\frac{1}{8}\)th of an atom = 1

• 1 body-centered atom

Thus, the total number of atoms in body-centered cubic unit cell: 1+1=2 atoms.