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Electromagnetic Radiation and Spectroscopy

ChemistryUpdated October 25, 2026

Types of electromagnetic radiation and their spectroscopic effects.

Electromagnetic Radiation and Spectroscopy

Microwave Radiation: generates molecular rotational motion; dipole interacts with the electromagnetic field.

Infrared Radiation: generates molecular vibrations; lighter atoms and stronger bonds vibrate at higher frequencies.

Ultraviolet/Visible Radiation: generates transitions in electron energy levels; absorbance measures concentration as chemicals absorb specific frequencies.

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