Crystalline iodine, I2\text{I}_2I2, is a dark-grey solid element that readily sublimes into a purple vapour at low temperatures.
How are the iodine particles held together in the solid crystal lattice?
Strong electrostatic forces of attraction between oppositely charged ions
Covalent bonds formed by shared pairs of electrons between adjacent iodine molecules
Electrostatic attraction between positive metal ions and a sea of delocalised electrons
Weak intermolecular forces of attraction between iodine 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.