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Atoms and Nuclei

Section: Physics

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Question : 40

Total: 51

The key feature of Bohr’s theory of spectrum of hydrogen atom is the quantization of angular momentum when an electron is revolving around a proton. We will extend this to a general rotational motion to find quantized rotational energy of a diatomic molecule assuming it to be rigid. The rule to be applied is Bohr’s quantization condition.

In a CO molecule, the distance between C (mass = 12 amu) and O (mass = 16 amu), where 1 amu =

×10−27kg, is close to

[JEE Adv 2010 P2]

2.4 × 10−10m
1.9 × 10−10m
1.3 × 10−10m
4.4 × 10−10m

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