Szénformák
Szénformák refers to the allotropes of carbon, which are different structural forms of the same element. These structures arise from the way carbon atoms bond with each other. The most well-known allotropes are diamond and graphite. In diamond, each carbon atom is tetrahedrally bonded to four other carbon atoms, forming a rigid, three-dimensional lattice structure. This arrangement makes diamond extremely hard and an electrical insulator. Graphite, on the other hand, consists of layers of carbon atoms arranged in hexagonal rings. Within each layer, carbon atoms are strongly bonded, but the layers themselves are held together by weaker van der Waals forces. This layered structure makes graphite soft, slippery, and a good electrical conductor. Other allotropes of carbon include fullerenes, such as buckyballs (C60), which are spherical molecules, and carbon nanotubes, which are cylindrical structures. More recently, graphene, a single layer of graphite, has gained significant attention for its remarkable electrical and mechanical properties. The specific arrangement of carbon atoms dictates the physical and chemical properties of each allotrope.