Question 1
Aluminum metal crystallizes in a face-centered cubic structure. The relationship between the radius of an Al atom (r) and the length of an edge of the unit cell (E) is:
◦
r = E/2◦
◦
◦
r = 2E◦
Question 2
An atom in an octahedral hole is surrounded by ____ atoms.
◦
2◦
3◦
4◦
6◦
8