molecular entity graphite 0 1056 1056.968 An allotropic form of the element carbon consisting of layers of hexagonally arranged carbon atoms in a planar condensed ring system (graphene layers). The layers are stacked parallel to each other in a three-dimensional crystalline long-range order. There are two allotropic forms with different stacking arrangements, hexagonal and rhombohedral. The chemical bonds within the layers are covalent with sp<small>^2</small> hybridization and with a C—C distance of 141.7 pm. The weak bonds between the layers are metallic with a strength comparable to van der Waals bonding only. C grafito plumbago graphite mineral carbon Graphit cas:7782-42-5 black lead chebi_ontology CHEBI:33418 Cn cas:12751-41-6 graphite gmelin:22250 chemical substance