BRAINCAKEExcitation of Hydrogen Atoms
The simplest atom is hydrogen.
The hydrogen atom has one proton and one electron.
The energy levels are given by
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Key terms in this lesson
- Photon
- A discrete packet, or quantum, of electromagnetic energy.
- Ionisation
- The removal of one or more electrons from a neutral atom, or the addition of electrons, to form an ion.
- Ionisation energy
- The minimum energy needed to remove an electron completely from an atom.
- Excitation
- The process by which an electron in an atom gains energy and moves to a higher, unoccupied energy level.
- Ground state
- The lowest energy state of an atom, in which its electrons occupy the lowest available energy levels.
More in The Photoelectric Effect
- De-excitation
- Fluorescence
- Fluorescent Tube
- Line Spectra
- The Discovery of Helium
- The Dual Nature of Light
- De Broglie's Hypothesis
- Evidence for de Broglie's Hypothesis
All 19 lessons in The Photoelectric Effect · All AQA AS-level Physics topics