Chapter 12, Problem 9QAP

(a)

To determine

To find:

The available fraction of octahedral positions that are filled by ${\text{Al}}^{\text{3+}}$ ions.

(b)

To determine

To sketch:

The octahedral positions filled by ${\text{Al}}^{\text{3+}}$ atoms in the corundum crystal structure of ${\text{Al}}_{\text{2}}{\text{O}}_{\text{3}}$.