Class 12 Chemistry The Solid State Crystal Lattices

Crystal Lattices


  • Crystalline solids have a regular and periodically repeating pattern of constituent particles.
  • The diagrammatical representation of three dimensional arrangements of constituent particles of a crystal in space with each particle depicted as a point is called crystal lattice.
  • There are only 14 possible three dimensional lattices and are known Bravais Lattices.
  • Each point in a lattice is called lattice point or lattice site.
  • Each point in a crystal lattice signifies one constituent particle which can be an atom, a molecule or an ion.
  • Lattice points are joined together using straight lines to identify the geometry of the lattice.

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