Chapter One: Transition elements

About this lesson

This chapter introduces the main transition elements, focusing on the first transition series (Sc to Zn). It covers their electron configurations, oxidation states, and general properties such as atomic radius trends, metallic character, magnetic properties (paramagnetic and diamagnetic), and catalytic activity. The text explains anomalies like chromium and copper configurations and why iron(II) is easily oxidized to iron(III) while manganese(II) is not. It also details the economic importance and uses of each element from scandium to zinc, including alloys and compounds. The chapter then discusses iron ores, extraction methods (blast furnace and Midrex), and the production of iron and steel. It describes types of alloys (interstitial, substitutional, intermetallic) and the chemical properties of iron and its oxides (FeO, Fe2O3, Fe3O4). By the end, students should be able to define transition elements, write electron configurations, explain oxidation states, compare magnetic properties, describe extraction processes, and identify uses of alloys and iron compounds.