What is the principal ore of aluminium from which it is commercially extracted via the Hall-Héroult process?

💡 Solution & Explanation

Bauxite is a hydrated aluminum oxide mineral and serves as the principal commercial ore from which aluminum is extracted through the Hall-Héroult electrolytic reduction process. Alternative choices such as hematite and galena represent ores of iron and lead, respectively, rather than aluminum. Cryolite is added to alumina during the Hall-Héroult process to lower its melting point and enhance electrical conductivity.