Question

A metal crystallizes with a face centered cubic lattice. The edge of the unit cell is 400 pm. The

diameter of the metal atom is _____________

• 283 pm

• 141 pm

• 200 pm

• 364 pm​

Answer 1

Explanation:

r=radius of atom

4r=√2a

2d=√2a

now,

d=a/√2. a=edge length

=400/√2

=400/1.414

=283pm