Topic 13.2: First-row d-block elements

13.2.1 List the characteristics properties of transition elements.

13.2.2 Explain why Sc and Zn are not considered to be transition elements

13.2.3 Explain the existence of variable oxidation number in ions of transition elements.

13.2.4 Define the term ligand

13.2.5 Describe and explain the formation of complexes of d-block elements

13.2.6 Explain why some complexes of d-block elements are coloured

13.2.7 State examples of the catalytic action of transition elements and their compounds.

13.2.8 Outline the economic significance of catalysts in the Contact and Haber processes