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Ionization energy

  1. Feb 17, 2012 #1
    Can anyone tell me which formula is used to calculate the ionization energy of elements different then H.

    E= Z^2 13,6eV/ n^2 where n- number of the shell, and Z- number of protons

    only gives the ionization energy in case of one electron around the nucleus.

    Thank you in advance.
  2. jcsd
  3. Feb 28, 2012 #2
  4. Feb 29, 2012 #3
    Konain the formula you quote would be for a single electron bound to a nucleus of atomic number Z. But in an atom it will have Z electrons and they interact so the ionisation energy is much more complex to calculate. The first good results from a calculation was by Hartree and Fock - look up Hartree model in a search engine
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