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Homework Help: Quantum mech help - radii of some atoms

  1. Dec 28, 2004 #1
    What is the ratio of the radii of muonic hydrogen to hydrogen? Muonic hydrogen consists of a proton and [tex]\mu^{-}[/tex]. How do you calculate this??
  2. jcsd
  3. Dec 28, 2004 #2


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    The concept of Radius of an atom is itself entirely classical,so when reading the text of the problem u should have pictured Bohr's semiclassical model for finite mass nucleus.
    U'll be neding this formula
    [tex] R_{n}=\frac{1}{Z}\frac{4\pi\epsilon_{0}\hbar^{2}}{\mu e^{2}} n^{2} [/tex]
    [tex] \frac{1}{\mu}=\frac{1}{m_{nucleus}}+\frac{1}{m_{electron/muon}} [/tex]

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