ZIMSEC A-Level Chemistry
6.4.1.1Characteristic properties; variable oxidation state; catalysis; magnetism
Characteristic properties; variable oxidation state; catalysis; magnetism in ZIMSEC A-Level Chemistry: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic22 practice questions1 lesson
Overview
Redox reactions of complexes in terms of E⦵ values are taught with redox titrations (6.1.6.5).
Learning objectives
What the syllabus expects you to be able to do.
- 6.4.1.1.1Explain what is meant by a transition element (a d-block element forming one or more stable ions with incomplete d orbitals).
- 6.4.1.1.2Analyse the electronic configurations of the first-row transition elements and their ions.
- 6.4.1.1.3Recognise that atomic radii, ionic radii and first ionisation energies of the transition metals are relatively invariant, and contrast their properties with calcium.
- 6.4.1.1.4Describe the tendency of transition elements to have variable oxidation states.
- 6.4.1.1.5Explain the magnetic properties of transition metals and their complexes in terms of paired and unpaired d electrons.
Lessons
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Transition elements: definition, electron configurations and general properties
45 min
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Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Turn Characteristic properties; variable oxidation state; catalysis; magnetism into a strength.
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