Which statement correctly describes the bonding and structure of the specified substance?
In quartz (SiO2SiO_2SiO2), the giant lattice is held together by strong electrostatic attractions between Si4+Si^{4+}Si4+ and O2−O^{2-}O2− ions.
In solid magnesium (MgMgMg), the metallic lattice is held together by the electrostatic attraction between Mg2+Mg^{2+}Mg2+ cations and delocalised electrons.
In sodium chloride (NaClNaClNaCl), the ionic bonding is highly directional, holding each Na+Na^+Na+ ion specifically to its nearest Cl−Cl^-Cl− neighbor.
In solid iodine (I2I_2I2), the molecular lattice is held together by covalent bonds between neighboring I2I_2I2 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.