(a(i))[2]
Describe the arrangement and motion of molecules in liquid bromine.
(a(ii))[1]
Explain why bromine has a low boiling point. Use ideas about structure and bonding.
(b(i))[2]
Fluorine reacts with potassium to form the ionic compound potassium fluoride. Suggest two physical properties of potassium fluoride.
(b(ii))[1]
Construct the ionic half-equation to show the formation of potassium ions from potassium atoms.
(b(iii))[1]
Construct the ionic half-equation to show the formation of fluoride ions from fluorine molecules.
(c(i))[1]
Chlorine gas is bubbled into aqueous potassium iodide. Chlorine is an oxidising agent. Name the two products of this reaction.
(c(ii))[1]
Describe the observations made during the reaction.