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← ScienceWhich energy transfer occurs when a molecule absorbs specific frequency of infrared radiation?
A)Vibrational mode excitation through dipole oscillation✓
B)Electronic transition through photon ionization
C)Nuclear spin flipping through magnetic resonance
D)Rotational energy reduction from quantum tunneling
💡 Explanation
When a molecule absorbs infrared radiation, the oscillating electric field of the IR photon interacts with the molecule's dipole moment leading to excitation of vibrational modes. Therefore, vibrational excitation results rather than electronic which requires UV-Vis, nuclear spin which requires radio waves, or rotational energy reduction because excitation occurs.
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