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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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. – Philipp Oct 29 '14 at 23:04
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Please see this question for a better phrased version of this one: http://chemistry.stackexchange.com/questions/18988/how-does-the-radial-distribution-function-of-vanadium-differ-from-that-of-calciu – RobChem Oct 31 '14 at 14:46
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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. – Philipp Oct 31 '14 at 15:18
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sorry but do you know the answer? – RobChem Oct 31 '14 at 18:11
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I'm desperate. I have two problem sheets in for Monday and a mountain of work ontop. – RobChem Oct 31 '14 at 18:20