Exhibit 21-1
The following question(s) pertain to Gallium which has a simple cubic unit cell. It has a molar mass of 69.72 g·mol^-¹and a density of 5.91 g·cm^-³.
Refer to Exhibit 21-1. What is the diameter of a single Gallium atom?

Question

Quizplus · Accepted Answer

The volume of the unit cell can be calculated using the density and molar mass. For a simple cubic unit cell, the edge length is equal to the diameter of the atom. Using the formula for density and the fact that there is one atom per unit cell in a simple cubic structure, the diameter can be calculated as approximately 2.70 Å.

Exhibit 21-1 The Following Question(s) Pertain to Gallium Which Has a Simple