Chemistry of transition elements

Worked examples (6)

• 1Defining a transition element (2 marks)
• 2Electron configurations (3 marks)
• 3Configurations of transition-metal ions (3 marks)
• 4Why Sc and Zn are not transition metals (3 marks)
• 5Physical properties vs Group 1 (3 marks)
• 6Characteristic chemical properties (4 marks)

Worked examples (6)

• 1Ligands and coordination number (2 marks)
• 2Oxidation state in a complex (2 marks)
• 3Ligand substitution colour changes (4 marks)
• 4Reactions with aqueous NaOH (3 marks)
• 5Manganate(VII) redox titration (4 marks)
• 6Variable oxidation states (3 marks)

Worked examples (6)

• 1Why a complex is coloured (3 marks)
• 2Why some ions are colourless (2 marks)
• 3Absorbed vs observed colour (3 marks)
• 4Relating ΔE to frequency/wavelength (3 marks)
• 5Factors that change the colour (4 marks)
• 6Colorimetry and concentration (3 marks)

Worked examples (6)

• 1Types of stereoisomerism in complexes (2 marks)
• 2cis–trans in a square-planar complex (3 marks)
• 3cis–trans in an octahedral complex (3 marks)
• 4Optical isomerism with bidentate ligands (3 marks)
• 5cisplatin as a drug (4 marks)
• 6Identifying which complexes are stereoisomeric (4 marks)

Worked examples (6)

• 1What Kstab measures (2 marks)
• 2Writing a Kstab expression (3 marks)
• 3Units of Kstab (2 marks)
• 4Predicting ligand exchange (4 marks)
• 5Comparing two ligands by Kstab (4 marks)
• 6Using Kstab to compare complexes (3 marks)