Which of the following options correctly describes the colours of the Group 7 elements bromine and iodine at room temperature?
bromine: red-brown, iodine: grey
bromine: pale green, iodine: red-brown
bromine: red-brown, iodine: purple
bromine: yellow-green, iodine: grey
106 exam-style questions on Edexcel GCSE Chemistry 7.2 Group 7, covering 7.2.1 Physical properties of the halogens, 7.2.2 Reactions of the halogens, 7.2.3 Relative reactivity and displacement reactions of the halogens, and 7.2.4 Halogen displacement as a redox reaction. Each one has a worked solution and a mark scheme showing where the marks go.