Time:2023.06.07Browse:1
Graphite is a carbon element crystalline mineral, and its crystalline grid is hexagonal layered structure. The distance between each network layer is 3.40å, and the distance between the carbon atom in the same network layer is 1.42å. It belongs to the hexagonal crystal system, with a complete layer -like lapse. The molecular keys are mainly attractive to the molecular keys, so its natural floatingability is very good.
Graphite and diamond, carbon 60, and carbon nanotubes are both the monomer of carbon, and they are similar aliens.
Six carbon atoms form a rumor-shaped ring on the same plane, stretching into a layer structure. Here the key length of the C-C key is 142pm, which is exactly the length of the keys of the atomic crystal. Therefore It is an atomic crystal. There is a P orbit left in the carbon atoms of the same plane, which overlap each other. Electronics is more free, which is equivalent to free electronics in metal, so graphite can conduct heat and conductivity, which is exactly the characteristics of metal crystals. Therefore, it is also classified as metal crystals.
The middle layer of the graphite crystal is 340pm between the middle layer of the graphite crystal and is large. It is combined with Van Dehua, that is, the molecular crystals between the layer and the layer. However, because the carbon atom on the same plane layer is strong and it is extremely difficult to destroy, the melting point of graphite is also very high, and the chemical properties are stable.
Given its special key to forming, it cannot be considered single crystal or polycrystal, and it is generally believed that graphite is a hybrid crystal.