Electronic Spectroscopy: Ultraviolet and Visible Light
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Questions and Answers

What is the result of absorbing UV-vis photons by a molecule?

  • Vibration of the molecule
  • Breaking of the molecule's chemical bonds
  • Emission of light by the molecule
  • Electronic excitation of the molecule (correct)

What is the term for any group of atoms that absorbs light?

  • Chromophore (correct)
  • Electron receptor
  • Photon absorber
  • Molecular orbital

What is the process of a transition from a higher energy level to a lower energy level with energy transfer to the radiation field?

  • Nonradiative decay
  • Emission (correct)
  • Electromagnetic transition
  • Absorption

What is the energy range of microwave radiation?

<p>10-6 to 10-3 J/mol (C)</p> Signup and view all the answers

What is the term for a transition from a higher energy level to a lower energy level without emitting radiation?

<p>Nonradiative decay (C)</p> Signup and view all the answers

What is the energy range of ultraviolet radiation?

<p>10-9 to 10-7 J/mol (D)</p> Signup and view all the answers

What is the process of a transition from a lower energy level to a higher energy level with energy transfer from the radiation field?

<p>Absorption (B)</p> Signup and view all the answers

What is the term for the molecular orbital that has the highest energy among occupied molecular orbitals?

<p>HOMO (C)</p> Signup and view all the answers

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