IB Chemistry HL 3.1.10 Transition-Element Colours Question Bank
Relate transition-element colours to d-electron energy splitting and electronic transitions.
- Syllabus
- First assessment 2025
- Course
- Chemistry HL
- Level
- HL
Exam points
- use electron structure and periodic position to justify a trend
- compare relevant atoms, ions or compounds with correct terminology
- link observations to effective nuclear charge, shielding or d electrons
3.1.10 (HL)—Transition element colors question 1
[Maximum number: 4]
Titanium and vanadium are consecutive elements in the first transition metal series.
Outline why transition metals form coloured compounds.
partially filled d-orbitals
«ligands cause» d-orbitals «to» split light is absorbed as electrons transit to a higher energy level «in d-d transitions» OR
light is absorbed as electrons are promoted energy gap corresponds to light in the visible region of the spectrum colour observed is the complementary colour
4 max
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