A solid crystalline material, YYY, is found to have a melting point of 1610∘C1610^\circ\text{C}1610∘C. It is an electrical insulator in both its solid phase and its liquid (molten) phase. Which of the following statements correctly describes the bonding responsible for these properties in material YYY?
Electrostatic attraction between a lattice of positive metal cations and a sea of delocalised valence electrons.
Electrostatic attraction between oppositely charged ions arranged in a giant three-dimensional lattice.
Sharing of electron pairs between non-metal atoms to form a giant three-dimensional macromolecular network.
Weak intermolecular forces holding discrete molecules together, with covalent bonds within the molecules.
74 exam-style questions on OCR GCSE Chemistry Bonding. Each one has a worked solution and a mark scheme showing where the marks go.