Graphene could be a single layer (monolayer) of carbon atoms, tightly certain in an exceedingly polygonal shape honeycomb lattice. it's Associate in Nursing element of carbon within the type of a plane of sp2-bonded atoms with a molecular bond length of zero.142 nanometres.
Fullerenes with a closed network topology ar informally denoted by their formula Cn, usually written Cn, wherever n is that the range of carbon atoms. However, for a few values of n there is also over one chemical compound.The family is called once fullerene (C60), the foremost celebrated member, that successively is called once architect.