Long answer·Hard exam skill (4/5)·No calculator
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
Use the oxidation-state data in the figure to discuss why manganese and zinc behave differently in the first transition series.
Total: 4 marks
(a) State the highest oxidation state shown for manganese. (1 mark)
(b) State the common oxidation state shown for zinc. (1 mark)
(c) Explain the difference using electronic configuration. (2 marks)
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