Which statement correctly describes the bonding present in solid ammonium chloride, NH4Cl\text{NH}_4\text{Cl}NH4Cl?
It contains only ionic bonds, formed by the electrostatic attraction between oppositely charged NH4+\text{NH}_4^+NH4+ and Cl−\text{Cl}^-Cl− ions.
It contains both ionic and covalent bonds, including a dative covalent bond where a nitrogen atom donates a lone pair of electrons to a proton (H+\text{H}^+H+).
It contains both ionic and covalent bonds, where the covalent bonds exist solely as weak electrostatic attractions between NH4+\text{NH}_4^+NH4+ and Cl−\text{Cl}^-Cl− species.
It contains only covalent bonds, with the NH4\text{NH}_4NH4 and Cl\text{Cl}Cl units held together by strong hydrogen bonding in a molecular lattice.
74 exam-style questions on OCR GCSE Chemistry Bonding. Each one has a worked solution and a mark scheme showing where the marks go.