Electron Orbits Quantization
Bohr postulate: angular momentum quantized as?
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About This Question
- Subject
- physics
- Chapter
- atoms and nuclei
- Topic
- electron orbits quantization
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
m v r = n h/(2π)
- Bohr's Postulate: Electrons can revolve only in certain stable, non-radiating orbits (stationary states).
- Quantization Rule: The angular momentum (L) of the electron in such orbits must be an integral multiple of h/2π.
- Equation: L=mvr=n2πh, where n=1,2,3,…
- Terminology: Here n is the principal quantum number. The constant h/2π is often written as ℏ (h-bar).
This hard difficulty physics question is from the chapter atoms and nuclei, covering the topic of electron orbits quantization. It appeared in the 2025 exam.
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