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← ScienceWhich outcome occurs when a pharmaceutical molecule's vibrational modes absorb infrared radiation?
A)Specific bond angle changes occur✓
B)Fluorescence emissions become intensified
C)Molecular ionization probability increases sharply
D)The intermolecular forces weaken uniformly
💡 Explanation
Absorption excites vibrational modes leading to increased amplitude and altered bond angles because the **molecular vibration** is shifting energy into specific bonds; therefore bond angles are modified, rather than triggering ionization or fluorescence, which need much higher energy.
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