Cambridge International A2 Level Chemistry (9701)/AQA /Edexcel
Book resources roger Norris 3rd edition and Hodder petre cann
9 lesson to complete all below content
explain what is meant by a transition element
describe how transition elements have variable oxidation states, behave as catalysts, form complex ions and form coloured ions
state the electronic configuration of a first-row transition element and of its ions
describe the tendency of transition elements to have variable oxidation states
describe and explain the use of MnO4- / C2O42-, MnO4- / Fe2+ and Cu2+ / I– as examples of redox systemsÂ
predict, using EÂ values, the feasibility of redox reactions involving transition metal compounds
define the terms ligand and complex
describe and explain the reactions of transition elements with ligands to form complexes, and describe the shapes and bond angles of complexes
describe the types of stereoisomerism (cis/trans and optical isomerism) shown by complexes, including those with bidentate ligands
explain qualitatively how ligand exchange may occur
describe the term stability constant, Kstab, of a complex ion, and write an expression for the stability constant of a complex
explain ligand exchange in terms of stability constants
sketch the general shape of atomic d orbitals
describe the splitting of degenerate d orbitals into two energy levels in octahedral and tetrahedral complexes
explain the origin of colour in transition element complexes
describe, in qualitative terms, the effects of different ligands on the absorption of light, and hence the colour of a complex.
