Indicate which vibrational modes will be IR-active and Raman-active. Briefly explain. Acetylene, symmetric triple bond stretch Benzene, symmetric...

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Chemistry

Indicate which vibrational modes will be IR-active andRaman-active. Briefly explain.

Acetylene, symmetric triple bond stretch

Benzene, symmetric ring CC stretch

Carbon dioxide, asymmetric C=O stretch

trans 1,2 dibromoethene, sym C=C

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Whenever there is change in dipole moment of molecule due to stretching of bonds then the molecule said to be IR active Raman activity occurs due to scattering of light by the vibrating molecules which results    See Answer
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