Identify and Describe Types of Unit Cells in Crystalline Solids

Which of the following best describes the term simple cubic unit cell?

A simple cubic unit cell is a unit cell in the simple cubic structure.
A simple cubic unit cell is defined as the unit cell in the simple cubic structure.

How many atoms will fit inside one simple cubic unit cell?

1

The simple cubic unit cell will fit one eighth of eight different atoms, which total to one atom.

The number of particles that each particle in a crystalline solid contacts is called the:

coordination number

The coordination number will tell us how many particles are adjacent to an individual particle in the solid lattice.

The simplest unit cell is the:

simple cubic unit cell

The simple cubic unit cell essentially consists of repeating cubes.

In a simple cubic unit cell, what percentage of the volume is occupied by atoms?

Only 52.4% of a simple cubic unit cell is occupied, which makes it a relatively inefficient way to arrange atoms in a crystalline solid.

Within a crystalline structure, a coordination number corresponds to

the number of spheres that touch the sphere in question.

A coordination number refers to the number of other spheres (atoms) that each sphere in a crystalline solid contacts.
For example, an atom in a simple cubic lattice structure contacts six other atoms, so it has a coordination number of six.

Which of the following is a crystalline structure in which close packed layers of atoms or ions are stacked as a series of two alternating layers of different relative orientations?

Hexagonal close packing

Hexagonal closest packing is defined as a crystalline structure in which close packed layers of atoms or ions are stacked as a series of two alternating layers of different relative orientations.

Which of the following is the definition of cubic close packing?

Cubic close packing is a crystalline structure in which planes of closely packed atoms or ions are stacked as a series of three alternating layers of different relative orientations.

Cubic close packing is defined as a crystalline structure in which planes of closely packed atoms or ions are stacked as a series of three alternating layers of different relative orientations.

When considering the composition of different types of unit cells of metals, we find that simple cubic unit cells _______.

have atoms occupying about 52% of the total volume

Simple cubic unit cells have atoms occupying about 52% of the total volume.

Which of the following gives the definition of body-centered cubic solid?

A body-centered cubic solid is a crystalline structure that has a cubic unit cell with lattice points at the corners and in the center of the cell.
A body-centered cubic solid is defined as a crystalline structure that has a cubic unit cell with lattice points at the corners and in the center of the cell.

When considering the net number of atoms contained in different types of unit cells of metals, we find that face-centered unit cells contain how many atoms?

Face-centered unit cells contain a net total of four atoms.

A coordination number is described by which of the following?

A coordination number is the number of atoms closest to any given atom in a crystal or to the central metal atom in a complex.

A coordination number is defined as the number of ions or atoms immediately surrounding a central atom in a crystal or to the central metal atom in a complex.