The halogens are non-metals. How do the halogen elements exist?
As single atoms that are not joined to any other atom at all
As giant structures of atoms joined together in a regular lattice
As molecules that are each made from a pair of joined atoms
As molecules that are each made from a chain of joined 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.