7: Solids

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7.1: Crystal Lattices
A crystal structure is a unique arrangement of atoms, ions or molecules in a crystalline liquid or solid. It describes a highly ordered structure, occurring due to the intrinsic nature of its constituents to form symmetric patterns.
7.2: Solids

Thumbnail: The crystal structure of sodium chloride, \(\ce{NaCl}\), a typical ionic compound. The purple spheres represent sodium cations, \(\ce{Na^{+}}\), and the green spheres represent chloride anions, \(\ce{Cl^{-}}\). (Public Domain; Benjah-bmm27 via Wikipedia)