Copper has face centered cubic (fcc) lattice with interatomic spacing equal to 2.54Å. The value of lattice constant for this lattice is

Options

(a) 2.54 Å
(b) 3.59 Å
(c) 1.27 Å
(d) 5.08 Å

Correct Answer:

3.59 Å

Explanation:

Lattice constant for C = r₀ × √2 = 2.54 × 1.414 = 3.59 Å