Ionic Structures and Unit Cells

The video tutorial explores the use of Chem Doodle 3D to visualize unit cells of various ionic compounds. Starting with the simplest structure, the simple cubic structure of polonium, it progresses to more complex structures like cesium chloride, zinc sulfide, calcium fluoride, and corundum. Each section explains the arrangement of ions and the type of unit cell formed, highlighting the differences in ionic sizes and their impact on the structure. The tutorial concludes with a demonstration of Chem Doodle 3D's features, emphasizing its utility in visualizing three-dimensional lattice structures.

What is the simplest unit cell structure that can be adopted by a metal?

• Hexagonal close-packed

• Simple cubic

• Face-centered cubic

• Body-centered cubic

Which metal is known to adopt the simple cubic structure?

• Aluminum

• Iron

• Polonium

• Copper

In the cesium chloride structure, what type of cubic structure do the cesium ions form?

• Hexagonal close-packed

• Simple cubic

• Body-centered cubic

• Face-centered cubic

What is the role of chloride ions in the cesium chloride structure?

• Forming the lattice

• Filling the cubic holes

• Creating a hexagonal pattern

• Acting as a catalyst

What type of structure does zinc sulfide form?

• Rhombohedral

• Face-centered cubic

• Body-centered cubic

• Simple cubic

In zinc sulfide, which ions fill the tetrahedral holes?

• Calcium ions

• Chloride ions

• Zinc ions

• Sulfide ions

What is the cation to anion ratio in calcium fluoride?

• 2:1

• 1:1

• 1:2

• 3:2

In calcium fluoride, which ions form the face-centered cubic structure?

• Sulfide ions

• Calcium ions

• Fluoride ions

• Zinc ions

What type of structure does aluminum oxide form?

• Face-centered cubic

• Body-centered cubic

• Rhombohedral

• Simple cubic

Which of the following is NOT a type of unit cell structure discussed in the video?

• Body-centered cubic

• Face-centered cubic

• Tetragonal

• Simple cubic