Crystal Lattice Structures: Density Calculation 5

The video tutorial explains how to calculate the density of a novel element crystallizing in a face-centered unit cell. It provides a step-by-step guide using the molecular weight and atomic radius, converting units, and applying the appropriate formula. The tutorial emphasizes understanding the process and offers insights into solving similar density problems.

What is the molecular weight of the novel element mentioned in the problem?

• 145 grams per mole

• 185 grams per mole

• 165 grams per mole

• 125 grams per mole

Which type of unit cell is used for the crystallization of the novel element?

• Face-centered cubic

• Hexagonal close-packed

• Body-centered cubic

• Simple cubic

What is the atomic radius of the element in centimeters?

• 1.25 * 10^-8 cm

• 1.25 * 10^-7 cm

• 1.25 * 10^-6 cm

• 1.25 * 10^-5 cm

What is the calculated density of the novel element?

• 21.79 grams per cubic centimeter

• 22.79 grams per cubic centimeter

• 19.79 grams per cubic centimeter

• 20.79 grams per cubic centimeter

What is a common strategy for solving density problems as discussed in the video?

• Use the same formula regardless of the unit cell type

• Ignore the atomic radius in calculations

• Identify the missing factor and solve for it

• Always assume the density is given