Chemistry / Unit 5 Chem 0804 short lesson, about 20 seconds
Electron Transitions: Absorption and Emission
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The idea
An electron absorbs a photon to jump to a higher energy level, and emits one falling back to a lower level.
In practice
An electron falling from a higher hydrogen level to a lower one emits a photon whose energy equals that gap.
Where people slip
A transition's photon energy is fixed by the gap between levels — no in-between energies are emitted or absorbed.
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