The elements in Group 1 are known as the alkali metals. Which feature of their atoms gives them their characteristic properties?
They have a single occupied electron shell in each of their atoms
They have a single proton in the nucleus of each of their atoms
They have a single electron in the outer shell of each of their atoms
They have a single neutron in the nucleus of each of 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.