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Homework Help: Vibrations of a hydrogen molecule

  1. Jul 29, 2008 #1
    1. The problem statement, all variables and given/known data
    Translated from swedish so i hope i get it right...

    Observe vibrations along the axis of the bond in a hydrogen molecule (H2). For low temperatueres, by which factor does the rms value ("root-mean-square deviation") of these vibrations amplitude change if one of the hydrogen atoms is changed for a deuterium atom?

    My problem is that i dont really know where to begin. So im not asking for a solution (becasue i know you wont give me one) but a push in the right direction.
  2. jcsd
  3. Jul 29, 2008 #2


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    At low temperatures, the hydrogen molecule will behave as a simple harmonic oscillator. Eg., 2 masses on a linear spring.
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