Worksheet: Electron Paramagnetic Resonance Spectra

In this worksheet, we will practice describing sample preparation and data analysis methods in electron paramagnetic resonance (EPR) spectroscopy.


Which of the following cannot be studied by EPR?

  • AFree radicals in the liquid or gas state
  • BComplexes containing more than one unpaired electron
  • CFree radicals in the solid state
  • DParamagnetic transition metal complexes
  • EDiamagnetic transition metal complexes


Which of the following radicals is most likely responsible for the EPR spectrum shown?

  • ANO2
  • BCHCl2
  • COH
  • DCHCH22
  • ECH3

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