Why are the outer shell electrons of metal atoms described as delocalised?
They are shared in pairs between two neighbouring metal atoms
They are transferred from one metal atom to another metal atom
They are held in fixed positions between the positive metal ions
They are free to move through the whole structure of the metal
40 exam-style questions on AQA GCSE Chemistry 2.1 Chemical bonds, ionic, covalent and metallic, covering 2.1.1 Chemical bonds, 2.1.2 Ionic bonding, 2.1.3 Ionic compounds, 2.1.4 Covalent bonding, and 2.1.5 Metallic bonding. Each one has a worked solution and a mark scheme showing where the marks go.