Aluminum (Al)has a density of 2.70 g/cm³ and crystallizes in a face-centered cubic structure.What is the unit-cell edge length?

Question

Quizplus · Accepted Answer

The face-centered cubic (FCC) structure has a relationship between the atomic radius (r) and the edge length (a) given by a = 2√2r. For aluminum, using its density and atomic mass, the edge length can be calculated to be approximately 405 pm.

Aluminum (Al)has a Density of 2 ×\times× 10-3 Pm B)40

Aluminum (Al)has a Density of 2 $\times$ 10^-3 Pm
B)40