Bohr's Model Of Atom
The radius of the third orbit of hydrogen atom according to Bohr's model is:
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About This Question
- Subject
- chemistry
- Chapter
- atomic structure
- Topic
- bohr's model of atom
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
4.761 Å
According to Bohr's model, the radius of the nth orbit of hydrogen atom is given by rₙ = 0.529 × n² Å. For n = 3, r₃ = 0.529 × 9 = 4.761 Å. The radius increases as the square of the principal quantum number, which means electrons in higher orbits are much farther from the nucleus.
This easy difficulty chemistry question is from the chapter atomic structure, covering the topic of bohr's model of atom. It appeared in the 2025 exam.
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