Crystal Structure

A crystal is a solid composed of atoms, ions, or molecules arranged in a pattern that is periodic in HOW MANY DIMENSIONS?

• 1

• 2

• 3

• 4

It is the smallest part of a crystal that, if repeated regularly by translation in three dimensions, creates the whole crystal.

• unit cell

• plant cell

• cellular body

• cell

It is a periodic array of structural units, such as atoms or molecules. It can be constructed by the infinite repetition of these identical structural units in space.

• Metallic Crystal

• Ideal Crystal

• Ionic Crystal

• Covalent Crystal

The unit cell of a crystal is defined by

• crystal's shape

• crystal's growth time

• crystal's texture

• crystal's lattice points

He showed that crystals could be divided into 14 unit cells.

• Auguste Bravais

• Ralp Bravais

• Gabriel Bravais

• Jude Bravais

An infinite array of discrete points with an arrangement and orientation that appears exactly the same, from any of the points the array is viewed from.

• Infinite Lattice

• Same Lattice

• Mendel Lattice

• Bravais Lattice

An extra lattice point is centered in each of two opposing faces of the cell.

• body-centered

• end-centered

• face-centered

• simple primitive unit cell

An extra lattice point is centered in the exact middle of the cell.

• body-centered

• end-centered

• face-centered

• simple primitive unit cell

It contains exactly one lattice point.

• primitive unit cell

• body-centered unit cell

• non-primitive unit cell

• face-centered unit cell

It tends to be densely packed. Typically, only one element is present, so all atomic radii are the same. It has the simplest crystal structures.

• Metallic Crystals

• Ideal Crystals

• Ionic Crystals

• Covalent Crystals