Gold crystallizes in a face-centered cubic structure.What is the edge length of the unit cell if the atomic radius of gold is 144 pm?
A) 204 pm
B) 288 pm
C) 333 pm
D) 407 pm

Question

Quizplus · Accepted Answer

In a face-centered cubic (FCC) structure, the edge length (a) is related to the atomic radius (r) by the formula a = 2√2r. For gold, with an atomic radius of 144 pm, the edge length is a = 2√2 * 144 pm ≈ 407 pm.

Gold Crystallizes in a Face-Centered Cubic Structure