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Bohr radius for single electron orbits

  1. Mar 10, 2007 #1
    for ions with more than one proton ie. He+, Li2+ and Be3+, doesn't the extra charge factor into the equation? because it seems only the elementary charge is http://en.wikipedia.org/wiki/Bohr_radius" [Broken], hence rendering it independent of amount of positive charge present.
    Last edited by a moderator: May 2, 2017
  2. jcsd
  3. Mar 10, 2007 #2


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    Staff: Mentor

    Yes. For ions with a single electron but [itex]Z[/itex] protons, replace [itex]e[/itex] with [itex]Ze[/itex], where [itex]e[/itex] is the unit charge [itex]1.60 \times 10^{-19}[/itex] C.

    Most textbooks do the derivation with hydrogen in mind, and later make the above correction for heavier, hydrogen-like ions.
  4. Mar 10, 2007 #3
    got it. thanks for the quick reply!
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