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CAIE A-Level Physics A2 22.4 Energy Levels in Atoms and Line Spectra Questions

Practise explaining discrete atomic energy levels, interpreting emission and absorption spectra and calculating photon energy or frequency from level differences.

Syllabus
2028–2030
Course
Physics 9702
Level
A2

Exam points

  • explain discrete electron energy levels in isolated atoms
  • interpret emission and absorption line spectra as transitions between allowed energy levels
  • calculate photon energy or frequency from the energy difference between levels

Covered syllabus points

22.4.1—There are discrete electron energy levels in isolated atoms (e.g. atomic22.4.2—The appearance and formation of emission and absorption line spectra22.4.3—Hf = E1 – E2

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