IR Absorption and Molecular Transitions
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Questions and Answers

What factor primarily determines the vibration frequency of a bond?

  • Bond length
  • Geometry of the molecule
  • Bond angle
  • Strength of the bond (correct)
  • Which type of bond is expected to vibrate at the highest frequency?

  • Triple bonds (correct)
  • Double bonds
  • There is no correlation between bond type and vibration frequency
  • Single bonds
  • What is the primary factor that influences the vibration frequency of light atoms?

  • Mass of the atoms (correct)
  • Bond strength
  • Bond stiffness
  • Geometry of the molecule
  • Which type of molecular vibration results in the absorption of IR energy?

    <p>Bond stretching</p> Signup and view all the answers

    Which factor determines the intensity of absorption of IR light in a molecule?

    <p>The symmetry of the molecule</p> Signup and view all the answers

    What type of molecule is likely to have less vibrational change and absorption of IR energy?

    <p>A symmetric molecule</p> Signup and view all the answers

    In which molecule is the probability of vibrational transition greater than that of an ethylenic molecule?

    <p>CO</p> Signup and view all the answers

    Which factor primarily determines the vibration frequency of a particular bond?

    <p>Masses of the bonded atoms</p> Signup and view all the answers

    What type of bond is stiffer and vibrates at higher frequencies?

    <p>Triple bonds</p> Signup and view all the answers

    Which type of molecular vibration is associated with in-plane rocking and scissoring?

    <p>Bond bending</p> Signup and view all the answers

    What is the essential requirement for molecular vibrations to result in IR energy absorption?

    <p>Not all molecular vibrations result in IR energy absorption</p> Signup and view all the answers

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