1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Ionization energy and Z effective

  1. Nov 28, 2011 #1


    User Avatar
    Gold Member

    1. The problem statement, all variables and given/known data
    Consider an alkali atom in its fundamental state and assume that its valence electron experiment a constant shielding with [itex]Z_{eff}>1[/itex]. Use the tabulated values of the ionization energy to estimate [itex]Z_{eff}[/itex] for the Li, Na and K atoms.

    2. Relevant equations
    I do not know.

    3. The attempt at a solution
    Z effective is the effective charge (in units of electron charge) the valence electron feels. I've "cheated" and checked out Z effective and the ionization energies for all these atoms, yet I do not find any correlation.
    Ionization energies: (5.39, 5.14, 4.34) eV.
    Z effective: (1.25, 1.84, 2.26).
    I'm at a loss. Any tip is appreciated.
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted