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For a molecule to absorb IR, why must the molecule's vibrations cause fluctuations in the dipole moment of the molecule? | |
A. | Because a change in dipole moment lowers the energy required for electronic transitions [Wrong Answer] |
B. | Because for absorption to occur, the radiation must interact with the electric field caused by changing dipole moment [Correct Answer] |
C. | Because fluctuations in the dipole moment allow the molecule to deform by bending and stretching [Wrong Answer] |
D. | All of the above [Wrong Answer] |