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For a particular vibrational mode to appear in the Raman spectrum, what must change?

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in Engineering Physics I by (558k points)
For a particular vibrational mode to appear in the Raman spectrum, what must change?

(a) Frequency of radiation

(b) Intensity of radiation

(c) Molecule’s shape

(d) Molecule’s polarizability

This question was posed to me in class test.

This intriguing question originated from Raman Effect topic in portion Quantum Physics of Engineering Physics I

1 Answer

+1 vote
by (1.4m points)
Correct answer is (d) Molecule’s polarizability

The explanation is: For a particular vibrational mode to appear in the Raman spectrum, the molecule’s polarizability must change during the course of the vibration.

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