Crystalline structure

A crystalline solid can be represented by its unit cell, which is the smallest identical unit that when stacked together produces the characteristic three-dimensional structure. Solids are characterized by an extended three-dimensional arrangement of atoms, ions, or molecules in which the components are generally locked into their positions. The components can be arranged in a regular repeating three-dimensional array. The smallest repeating unit of a crystal lattice is the unit cell.

A crystalline solid can be represented by its unit cell, which is the smallest identical unit that when stacked together produces the characteristic three-dimensional structure. Solids are characterized by an extended three-dimensional arrangement of atoms, ions, or molecules in which the components are generally locked into their positions. The components can be arranged in a regular repeating three-dimensional array. The smallest repeating unit of a crystal lattice is the unit cell.

graphite - Graphite is a mineral of pure carbon, just like diamond but with a different crystalline structure.

Posted by Sean Christopher,

In any sort of discussion of crystalline materials, it is useful to begin with a discussion of crystallography: the study of the formation, structure, and properties of crystals. A crystal structure is defined as the particular repeating arrangement of atoms (molecules or ions) throughout a crystal. Structure refers to the internal arrangement of particles and not the external appearance of the crystal. However, these are not entirely independent.

The structure of graphite. Illustration about atom, ball, bonding, science, particle, compound, medicine, biochemistry, medical, formula, atomic, education, reaction - 55335133

In this chapter, the crystal structures of sulfides and related chalcogenide compounds (involving Se, Te, As and Sb as well as S) are reviewed with

crystallography

Diamond structure.

Polymers, whether natural or artificial, are big molecules made by linking up smaller repeating chemical units. The most common “backbones” for polymers are chains of carbon or silicon, each of which can bond to four other atoms.