Crystal Structure in General

Arrangement of atoms in solids can be expected if the inter-atomic known whether or not to have directional properties. The atoms in the belt by bonding lead (covalent bonds, permanent dipole) lined up in one particular rule to satisfy the valence angle. If the bond was not the bonding lead (metal bonding, ionic bonding, Van der Waals bonds), the atoms behave like a ball and form a rigid structure to follow a specific geometric shapes are determined by comparison of their relative dimensions. In the crystalline inorganic compound complex nature of the bonds between the atoms can not be seen clearly his trademark, between covalent and ionic bonds. Furthermore, in some cases different types of bonding can work on single crystals. In this regard it should be noted that the various crystal structures presented below are grouped by main force acting on its bonds.

1. No lead bonding and simple ionic bond
2. Directional bonding and simple cobalent structure
3. Mixed complex bounding cristal