Concept:Van der Waals' forces are weak intermolecular attractions found between molecules or between layers of certain covalent structures.
Explanation:Copper is a metal, so its atoms are held together by metallic bonds, not by van der Waals' forces.
Graphite contains layers held by van der Waals' forces.
Neon exists as single atoms whose temporary dipoles create London dispersion forces, a form of van der Waals' forces.
Iodine crystals are molecular solids joined by van der Waals' forces.
Therefore, copper is the only substance that does not have van der Waals' forces.
Answer:Copper