Geim and Novoselov isolated an allotrope of this element which has extremely high electron motility and consists of a single layer of atoms.
Lonsdaleite is composed of this element, a form of which is visualized using the de Heer abacus to have armchair, zigzag, and chiral conformations. When another form of this element is dissolved in toluene, it forms a bright purple color. Geim and Novoselov isolated an allotrope of this element which has extremely high electron motility and consists of a single layer of atoms. A truncated icosahedron consisting of hexagons and pentagons formed from this element was named for architect R. Buckminster Fuller. For 10 points, name this element whose allotropes include buckyballs, nanotubes, graphite, and diamonds.
Lonsdaleite is composed of this element, a form of which is visualized using the de Heer abacus to have armchair, zigzag, and chiral conformations.
carbon [or C]