Question

Gold ( atomic radius =0.144nm) crystallizes in a face centired uint ce

Answer 1

Explanation:

For fcc unit cell, a=2

2

r.

Here, a is the edge length and r is the atomic radius (0.144 nm).

a=2

2

×0.144=0.407 nm

Hence, the length of a side of a cell is 0.407 nm.