Which statement about the structure and properties of carbon allotropes is correct?
Graphite conducts electricity because it contains free-moving ions.
Graphene consists of a single two-dimensional layer of carbon atoms.
Buckminsterfullerene (C60\text{C}_{60}C60) has a giant covalent macromolecular structure.
Diamond has a low melting point because of weak intermolecular forces.
74 exam-style questions on OCR GCSE Chemistry Bonding. Each one has a worked solution and a mark scheme showing where the marks go.