Fluorine and chlorine are both in Group 7 of the periodic table. What does this tell you about them?
They have the same number of occupied electron shells
They have the same relative atomic mass as each other
They have similar chemical properties to each other
They have the same number of protons in their atoms
40 exam-style questions on AQA GCSE Chemistry 1.2 The periodic table, covering 1.2.1 The periodic table, 1.2.2 Development of the periodic table, 1.2.3 Metals and non-metals, 1.2.4 Group 0, 1.2.5 Group 1, and 1.2.6 Group 7. Each one has a worked solution and a mark scheme showing where the marks go.