Calcium oxide has a face centered cubic unit cell of oxide ions with the calcium in octahedral holes.If the radius of Ca²⁺ is 106 pm and the density of CaO is 3.34 g/cm³,what is the radius of the oxide ion? (100 cm = 1 $\times$ 10¹² pm)

Question

Quizplus · Accepted Answer

The density and the unit cell type can be used to calculate the edge length of the unit cell. Using the relationship between the edge length and the radii of the ions in a face-centered cubic structure, the radius of the oxide ion can be determined.

Calcium Oxide Has a Face Centered Cubic Unit Cell of Oxide