Cesium has a radius of 272 pm and crystallizes in a face-centered cubic unit cell.What is the edge length of the unit cell?
A)314 pm
B)385 pm
C)544 pm
D)769 pm

Question

Quizplus · Accepted Answer

In a face-centered cubic (FCC) unit cell, the relationship between the atomic radius (r) and the edge length (a) is given by a = 2√2r. For cesium, with a radius of 272 pm, the edge length is a = 2√2 * 272 pm = 769 pm.

Cesium Has a Radius of 272 Pm and Crystallizes in a Face-Centered