L

Lattice

Quick Reference
Also Known AsCrystal lattice, Bravais lattice, space lattice, periodic array

What is Lattice?

The regular, repeating three-dimensional arrangement of atoms, ions, or molecules in a crystalline solid. The geometry of the lattice determines crystal structure and properties. Types include face-centered cubic (FCC), body-centered cubic (BCC), and hexagonal close-packed (HCP).

Properties & Characteristics

A lattice is the regular, periodic three-dimensional arrangement of points in space that describes the translational symmetry of a crystal. Each lattice point represents an identical atom, ion, or molecule (or group thereof — the basis). There are 14 distinct Bravais lattices classified into 7 crystal systems (cubic, tetragonal, orthorhombic, hexagonal, trigonal, monoclinic, triclinic). The lattice determines X-ray diffraction peak positions (Bragg's law).

Uses & Applications

Lattice geometry is central to: X-ray and neutron crystallography (determining atomic positions), designing new crystalline materials, understanding phase transitions, calculating Madelung constants for ionic compound stability, and in computational materials modelling (DFT calculations use periodic boundary conditions on lattice).

Safety Information

No direct safety concern for the concept. Crystalline lattices of toxic heavy metals (lead, cadmium) or radioactive materials (uranium ore) present their own hazards. Fine crystalline dust inhalation (silica lattice particles) causes silicosis.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Lattice
Synonyms Crystal lattice, Bravais lattice, space lattice, periodic array

Frequently Asked Questions

The regular, repeating three-dimensional arrangement of atoms, ions, or molecules in a crystalline solid. The geometry of the lattice determines crystal structure and properties. Types include face-centered cubic (FCC), body-centered cubic (BCC), and hexagonal close-packed (HCP).

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