comes from: simple crystal structures
Carbon is an element that can crystallize in the solid phase in two different ways: as a network FCC or hexagonal structure. These two types of networks give radically different properties. When crystallizes in cubic lattice is a diamond. When crystallized as hexagonal lattice, is best known for graphite, which forms the lead in a pencil.
The FCC has an associated network base with 4 points, one in the corner, and three in the center of the cube. Each lattice point is associated with two atoms of carbon. The second is displaced from the first (A / 4, a / 4, a / 4). This structure is responsible for that diamond is hard, bright, and it is a good electrical insulator.
On the other hand, graphite has a hexagonal structure with a base of two points: the origin of the network, and (2 / 3, 1 / 3, 1 / 2) . This structure makes graphite is a brittle material, dark and a conductor of electricity. Quite the opposite of a diamond.
This example so far of the structures that can acquire carbon, shows that in a material, the structure is the key from which to understand their properties.
The FCC has an associated network base with 4 points, one in the corner, and three in the center of the cube. Each lattice point is associated with two atoms of carbon. The second is displaced from the first (A / 4, a / 4, a / 4). This structure is responsible for that diamond is hard, bright, and it is a good electrical insulator.
On the other hand, graphite has a hexagonal structure with a base of two points: the origin of the network, and (2 / 3, 1 / 3, 1 / 2) . This structure makes graphite is a brittle material, dark and a conductor of electricity. Quite the opposite of a diamond.
This example so far of the structures that can acquire carbon, shows that in a material, the structure is the key from which to understand their properties.
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