Lesson: Hole Geometries in Crystals

Chemistry

In this lesson, we will learn how to determine stoichiometries of atoms and ions in cubic lattices based on Bravais lattice type and hole occupancies.

Worksheet

Q1:

In a cubic ionic lattice, a cation of element is located at each corner of the unit cell and an anion of element is located at the center of each edge. What is the formula of this material?

Q2:

In the cubic unit cell of manganese oxide, there is a manganese ion in the center of the cell and at each of the corners. Oxide ions are located at the center of each edge of the unit cell. What is the formula of this compound?

Q3:

In an ionic lattice, cations of element occupy all of the cubic holes in the simple cubic lattice formed by anions of element . What is the formula of this material?

Preview Download