The Γ3N for BeH2 from the preceeding number reduces to Ag + B2g + B3g + 2B1u + 2B2u + 2B3u. After removing symmmetry labels due to rotational and translational motion, how many of the vibrational labels are IR active and how many are Raman active? a. There are 3 IR active and 1 Raman active molecular vibrations.

Physical Chemistry
2nd Edition
ISBN:9781133958437
Author:Ball, David W. (david Warren), BAER, Tomas
Publisher:Ball, David W. (david Warren), BAER, Tomas
Chapter14: Rotational And Vibrational Spectroscopy
Section: Chapter Questions
Problem 14.45E: Determine the number of total degrees of freedom and the number of vibrational degrees of freedom...
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The Γ3N for BeH2 from the preceeding number reduces to Ag + B2g + B3g + 2B1u + 2B2u + 2B3u. After removing symmmetry labels due to rotational and translational motion, how many of the vibrational labels are IR active and how many are Raman active?

a. There are 3 IR active and 1 Raman active molecular vibrations.

b. There are 1 IR active and 3 Raman active molecular vibrations.

c.There are 3 IR active and 0 Raman active molecular vibrations.

d. There are 6 IR active and 3 Raman active molecular vibrations.

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