Lithium and sulfur react to form an ionic compound. Lithium is in group 1 and sulfur is in group 6 of the periodic table. The atomic number of lithium is 3.
Explain how ionic bonding occurs when lithium reacts with sulfur. Your answer should include the ratio of lithium ions to sulfide ions in the compound.
Calculate the number of electrons in a lithium ion.
119 exam-style questions on Edexcel GCSE Chemistry 2.3 Ionic bonding, covering 2.3.1 Ions and the formation of ionic bonds, 2.3.2 Naming and deducing formulae of ionic compounds, and 2.3.3 Giant ionic lattices. Each one has a worked solution and a mark scheme showing where the marks go.