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College Chemistry

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A hydrogen-like ion is an ion containing only one electron. The energy of the electron in a hydrogen-like ion is given by:


where n is the principal quantum number and Z is the atomic number of the element.

Calculate the ionization energy (in kJ/mol) of the He+ ion.


  • College Chemistry -

    I think I did this for you last night.
    Z = 2^2
    n = 1. Punch into the calculator and move on.

  • College Chemistry -

    if you plug in
    its wrong and i don't knwo why

  • College Chemistry -

    It is -8,72 x 10^-21 kJ
    Reason: After punching in those values you then have to convert that answer from J to kJ which 1kJ=1000J

  • College Chemistry -


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