Question

Bcc type of crystal lattice contains 1.208 × 10²³ unit cells. How many atoms of the element are present in these unit cells?

Options

• 6.04 × 10²³

• 3.618 × 10²³

• 1.208 × 10²³

• 2.416 × 10²³

Answer 1

2.416 × 10²³ 

Explanation:

Crystal lattice contains = 1.208 × 10²³ unit cells

Type of crystal is BCC = n = 2

∴ No. of atoms present in BCC unit cells

= 2 × 1.208 × 10²³

= 2.416 × 10²³ atoms