Chemistry / Unit 5 Chem 0796 short lesson, about 20 seconds
Bohr's Postulates
Captions available
The idea
In 1913, Niels Bohr proposed an atom's electron occupies only fixed orbits, each with quantized angular momentum and fixed energy, radiating none while in one.
In practice
Bohr's quantized-orbit assumption, applied to hydrogen, reproduced the Rydberg equation's structure and matched the measured constant.
Where people slip
Bohr's fixed orbits were postulated to match observation — the model gave no reason why only those orbits exist.
Your place on the trail
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