Charge distribution of nuclei affect the electronic charge density?

hosfa
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As I mentioned, I want to know if the cahrge distribution of nuclei has any influence on electronic properties. And what can cause a change on the nuclear charge distribution!
 
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The wavefunctions of electrons (especially s-orbitals) have a non-zero amplitude in the nucleus, so the charge distribution there does influence them. I would expect the strongest (that does not mean "strong"!) effect on the inner electrons of very heavy elements, and negligible effects on outer electrons.
Which "electronic properties" do you mean?
 
hosfa said:
And what can cause a change on the nuclear charge distribution!
Any nucleus with spin over half possesses nonzero quadrupole moment.

What are the effects of the nuclear quadrupole on the electronic properties?
 

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