Which of the following is not responsible for the conduction of electricity?
The potassium ions in molten potassium bromide
The delocalized electrons in graphene
The mobile valence electrons in solid zinc
The covalent bonding electrons in liquid ethanol
54 exam-style questions on AQA A Level Chemistry Bonding, covering Ionic bonding, Nature of covalent and dative covalent bonds, Metallic bonding, Bonding and physical properties, Shapes of simple molecules and ions, Bond polarity, and Forces between molecules. Each one has a worked solution and a mark scheme showing where the marks go.