What is the purest form of carbon?
Fullerene or diamond?
According to the latest discoveries purest form of carbon is Fullerene. They do not have surface bonds that are to be attracted by other atoms as we see in the case of diamond and graphite.
Fullerenes
A fullerene is an allotrope of carbon whose molecule consists of carbon atoms connected by single and double bonds so as to form a closed or partially closed mesh, with fused rings of five to seven atoms.
The molecule may be a hollow sphere, ellipsoid, tube, or many other shapes and sizes.
The purest form of carbon is fullerenes since they have a smooth structure without dangling bonds.
Fullerenes are the pure carbons that are in form of a spherical hollow cage-like soccer ball with 60 carbon atoms. It has twenty, five-membered rings and twelve, six-membered rings.