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Bravais latticeZoomA-Z

Subject - General Chemistry

Named for A. Bravais, these lattices describe the ways in which a space can be constructed from a three-dimensional repeating arrangement of points. The Bravais lattices permit a systematic description of the arrangement of atoms, ions, or molecules within a crystal. This is done by considering the unit cell of the crystal. It exist 14 different Bravais lattices, which can be classified into seven crystal systems.

A Bravais lattice consists of only one type of particle; for example the crystal lattice of a salt is made of a lattice of cations and an equivalent lattice of anions that is shifted by an appropriate translation factor.

The Bravais lattices are classified as either primitive or centered lattices. The centered lattices are further differentiated by the location of their additional lattice points. These may be either at the body center of the unit cell (body-centered lattice), in the middle of each face of the unit cell (face-centered lattice), or at the centers of the two bases of the unit cell (base-centered lattice).