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I recognize that the 3d orbital decreases in energy to lower than the 4s once it becomes occupied (even if I don't completely understand why?!). However, how is the difference in electron configuration of Ca and V^3+ explained by the radial distribution functions? This is a question from a problem sheet at my University and I can't seem to find an answer relating to RDF's anywhere.

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  • $\begingroup$ It would be helpful if you included everything you mention into your question, e.g. pictures of the radial distribution functions and the electron configurations of $\ce{Ca}$ and $\ce{V^{3+}}$. Furthermore this tutorial shows you how math and chemical formulae can be nicely formatted on this site. $\endgroup$
    – Philipp
    Commented Oct 29, 2014 at 23:04
  • $\begingroup$ Please see this question for a better phrased version of this one: chemistry.stackexchange.com/questions/18988/… $\endgroup$
    – RobChem
    Commented Oct 31, 2014 at 14:46
  • $\begingroup$ Please don't double-post questions. Instead of posting another question with improved phrasing it would have been better if you edited this question of yours. $\endgroup$
    – Philipp
    Commented Oct 31, 2014 at 15:18
  • $\begingroup$ sorry but do you know the answer? $\endgroup$
    – RobChem
    Commented Oct 31, 2014 at 18:11
  • $\begingroup$ I'm desperate. I have two problem sheets in for Monday and a mountain of work ontop. $\endgroup$
    – RobChem
    Commented Oct 31, 2014 at 18:20

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