Monoatomic Bravais lattice

Appendix 6.B Normal Modes in a 3-Dimensional Monoatomic Bravais Lattice.155... 

Figure 7.10 shows the 14 three-dimensional Bravais lattices available for monoatomic solids. This means that, for a crystal consisting of only one atom, there are only 14 ways in which this crystal can fill space. In practice, the stable crystal structures of the chemical elements chose only a few of these lattices. 

The 14 possible Bravais lattices for crystals of a monoatomic molecule. The full designation shown here bears a numerical prefix—for example, 23Ffor face-centered cubic. When space groups are generated from the Bravais lattices, then this numerical prefix is dropped (e.g., the 23P cubic Bravais lattice reappears simply as P), because the other numbers or letters that follow the P will identify the space group uniquely. 

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