Problem: The rutile and fluorite structures, shown here (anions are colored green and are the larger of the two spheres), are two of the most common structure types for ionic compounds where the cation-to-anion ratio is 1:2.For CaF2 and ZnF2 use ionic radii, Ca2+ (r=1.14), Zn2+ (r=0.88), and F- (r=1.19), to predict which compound is more likely to crystallize with the fluorite structure and which with the rutile structure.

⚠️Our tutors found the solution shown to be helpful for the problem you're searching for. We don't have the exact solution yet.

FREE Expert Solution
Problem Details

The rutile and fluorite structures, shown here (anions are colored green and are the larger of the two spheres), are two of the most common structure types for ionic compounds where the cation-to-anion ratio is 1:2.

Rutile is a rectangular cuboid with cations at its corners and two rows of three anions inside. Fluorine is a cube with cations at its corners and face centers and anions inside.

For CaF2 and ZnF2 use ionic radii, Ca2+ (r=1.14), Zn2+ (r=0.88), and F- (r=1.19), to predict which compound is more likely to crystallize with the fluorite structure and which with the rutile structure.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Atomic, Ionic, and Molecular Solids concept. If you need more Atomic, Ionic, and Molecular Solids practice, you can also practice Atomic, Ionic, and Molecular Solids practice problems.