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ifos • paper_2 • atomic_molecularifos-2023-subject-06-007

Vibrational spectra — UPSC IFoS 2023 Physics PYQ

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(i) Homonuclear diatomic molecules do not give any pure rotational or vibrational spectra, whereas they do give a rotational Raman spectra. Comment. (ii) The separation between the adjacent rotational Raman lines is 4B in hydrogen molecule, whereas in oxygen molecule it is 8B. Why?

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