Sodium is in Group 1 and sulfur is in Group 6. Sodium reacts with sulfur to form the ionic compound sodium sulfide.
Predict the formula of sodium sulfide. Explain your answer in terms of the ions formed.
98 exam-style questions on AQA GCSE Chemistry 2.1 Chemical bonds, ionic, covalent and metallic, covering 2.1.1 Chemical bonds, 2.1.2 Ionic bonding, 2.1.3 Ionic compounds, 2.1.4 Covalent bonding, and 2.1.5 Metallic bonding. Each one has a worked solution and a mark scheme showing where the marks go.