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Why does a change in polarizability in a molecule allow a vibrational mode to be Raman...

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Chemistry

Why does a change in polarizability in a molecule allow avibrational mode to be Raman active? Why does a change in dipolemoment allow a vibrational mode to be IR active? Why do theydiffer?

Answer & Explanation Solved by verified expert
3.7 Ratings (332 Votes)
A molecule gets distorted that is it gets polarized in an electric field A Raman shift which is Raman transition from one state to another can be activated optically only in the presence of nonzero polarizability since Stokes    See Answer
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