What is the edge length of a face-centered cubic unit cell made up of atoms having a radius of 139 pm?
A)197 pm
B)393 pm
C)556 pm
D)1110 pm

Name: What is the edge length of a face-centered cubic unit cell made up of atoms having a radius of 139 pm? A)197 pm B)393 pm C)556 pm D)1110 pm
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Quizplus · Accepted Answer

In a face-centered cubic (FCC) unit cell, the edge length (a) is related to the atomic radius (r) by the formula a = 2√2r. Substituting r = 139 pm, we get a = 2√2 * 139 pm ≈ 393 pm.

What Is the Edge Length of a Face-Centered Cubic Unit