BRAINCAKEEnergy Levels and Emission Spectra
When atoms in a gaseous state are given energy by either heating or passing an electric current through them electrons move to a higher energy level.
They emit photons when they fall back to lower energy levels.
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More in Atomic Structure
- Quantum Shells
- Orbitals
- Electronic Configurations
- Predicting Electronic Configuration
- First Ionisation Energy
- Successive Ionisation Energies
- The Energy of an Electron
- Ionisation Energy across a Period
All 19 lessons in Atomic Structure · All Edexcel AS-level Chemistry topics