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Mass defect of hydrogen atom

  1. Jun 21, 2015 #1
    What's the mass difference between a hydrogen atom and it's constituent particles when they are free, I'm talking about the proton and the electron, not the quarks that make up the proton.
    Last edited: Jun 21, 2015
  2. jcsd
  3. Jun 21, 2015 #2
    The binding energy (13.7 eV) divided by c^2.
  4. Jun 21, 2015 #3
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