The Spectrum and Molecular Effects Wavelength(入) Region Energy Molecular effects higher frequency cm kJ/mol shorter wavelength 10-9 gamma rays 107 107 X rays 105 ionization vacuum UV 103 10-5 near UV electronic transitions 10-4 visible 102 infrared 10-3 10 molecular vibrations (IR) 1 10-1 microwave rotational motion 102 10-2 lower frequency radio 104 10-4 longer wavelength 10-6 nuclear spin transitions Copyright 2005 Pearson Prentice Hall,Inc. Chapter 12 Chapter 12 5 The Spectrum and Molecular Effects =>