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CAIE A-Level Chemistry A2 28.1.5 Why Transition Elements Behave As Catalysts Questions

Practise explaining transition-metal catalysis through variable oxidation states and accessible vacant d orbitals.

Syllabus
2028–2030
Course
Chemistry 9701
Level
A2

Exam points

  • use multiple stable oxidation states to explain electron-transfer pathways in homogeneous catalysis
  • use energetically accessible vacant d orbitals to accept ligand lone pairs and form temporary bonds
  • connect these alternatives to a lower-activation-energy mechanism while the catalyst is regenerated

CAIE A-Level Chemistry A2 28.1.5 Why Transition Elements Behave As Catalysts Questions question 1

[Maximum number: 2]

Explain why transition elements behave as catalysts.

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