Online Videos –
Transition Elements

These videos of our regular classes are available to our regular class students.

Each lesson is broken up into a few videos. In the description below each video, you can look for the content or question that you would like to view or revisit.

21  Transition Elements (Week 1)
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Video 1-1
  • Introduction

  • Atomic structure and electronic configurations (Q1 to Q5)

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Video 1-2
  • Explain the relative invariance of the atomic radii and 1st IE

  • Explain higher melting point and density of transition elements compared to s-block elements

  • Q5, Q6, Q7, Q8

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Video 1-3
  • Variable oxidation states and redox reactions (Q9 to Q14)

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Video 1-4
  • Catalytic activity

  • Homogeneous catalysis (Q15)

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Video 1-5
  • Structure of complexes (Q16, Q17)

  • Types of ligands, shapes of complexes, and charges on complexes (Q18 to Q23)

21  Transition Elements (Week 2)
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Video 2-1
  • Aqua complexes and their acidic properties (Q24)

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Video 2-4
  • Effects of ligand exchange on reduction potentials (Q29)

  • Ligand exchange in biomolecules (haemoglobin)

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Video 2-2
  • Ligand exchange reactions and their effects on the colour of complexes

  • Complexes of Cu(II) ions (Q25)

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Video 2-3
  • Typical reactions of transition metal ions (Q26, Q27, Q28)

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Video 2-5
  • Colour of complexes (d-d splitting and d-d transition) (Q30)

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Video 2-6
  • Factors affecting the colour of complexes (Q31)

  • Practices (Q32 to Q36)