The elements in the periodic table are arranged in groups. Elements in the same group have similar chemical properties.
Explain why elements in the same group have similar chemical properties.
Explain why group 1 elements are classified as metals and group 7 elements as non-metals, in terms of the ions they form.
An element Q forms an ion Q+\mathrm{Q^{+}}Q+ with the electronic configuration 2.8. Identify element Q and state its group.
An element R forms an ion R−\mathrm{R^{-}}R− with the electronic configuration 2.8.8. Identify element R.
Explain why the elements in group 0 exist as single atoms and do not form ions.
41 exam-style questions on Edexcel GCSE Chemistry 7.1 Group 1, covering 7.1.1 Classifying elements by group in the periodic table and 7.1.2 Properties and reactions of the alkali metals. Each one has a worked solution and a mark scheme showing where the marks go.