Aluminium is a Group III element. It is obtained from its ore by electrolysis. From aluminium’s position in the Periodic Table, its aqueous ion is expected to be ...1.... . The way it is extracted shows that aluminium is ...2.... in the reactivity series. Which words complete gaps 1 and 2?
- Acoloured; high
- Bcoloured; low
- Ccolourless; high
- Dcolourless; low