covalent crystal

So really a single crystal of a covalent crystals is really just one big molecule.

Covalent crystals can have extremely high melting points.

Covalent crystals may be broadly classified into two types: molecular and macro-molecular.

Covalent crystal production.

Furthermore the elastic moduli of the polymer would be very high, as in a covalent crystal such as diamond, and this is not the case.

The first part describes common crystal structures and how they are related to close-packed arrangements of ions as well as metallic, ionic, molecular and extended covalent crystals.

Covalent Crystals (semiconductors): Band structure diagrams, electron densities, effective mass concept, spectroscopy, intrinsic behavior, doping, Fermi level calculations, drift velocities, mobilities, and conductivity.

This is a situation unlike that in covalent crystals, where covalent bonds between specific atoms are still discernible from the shorter distances between them, as measured via such techniques as X-ray diffraction.

Ionic crystals are made up of quite different ions, such as Na and Cl in common salt, for example, while covalent crystals such as diamond are made up of atoms which share electrons in a covalent bond.

It is most often applied to the forces on first- and second-nearest neighboring atoms which arise when an atom is moved in tetrahedrally-bonded solids, such as diamond, silicon, germanium, and a number of other covalent crystals with the diamond or zinc blende structures.

Crystalline solids generally consist of an ordered array of interconnected atoms, generated by repetition of a unit cell in three dimensions, and are of two extreme types; ionic crystals, and covalent crystals, with others which are intermediate: partly ionic and partly covalent.