Question

what type of structures can carbon atoms form

Answer 1

The carbon element is one of the most abundant elements on earth. A fundamental element, important for living, there are four different types of bonds carbon can form. The bonds formed are called covalent bonds, which are created when two atoms share an electron (i.e. valence electrons) with each other.

In graphite, the carbon atoms form a different structure (Fig. 5). Each carbon is bonded strongly to three carbon atoms and bonded weakly to one carbon atom. The strongly bonded atoms form layers, called graphene, with atoms arranged in a hexagonal structure. The layers coupled through the weaker bonds.

Answer 2

See Carbon can form

Tetrahedral structures

Or

Hexagonal