Filling d orbital with s electrons

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Victoria Li 1L
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Joined: Sat Jul 20, 2019 12:15 am

Filling d orbital with s electrons

Postby Victoria Li 1L » Sun Oct 20, 2019 1:59 pm

I understand that, in the case of elements like copper and silver, the s orbital electrons will donate an electron to the d orbital to achieve a full orbital. But I was wondering, why does this happen? Is a full d orbital more stable than an unfilled s orbital?

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Re: Filling d orbital with s electrons

Postby Chem_Mod » Sun Oct 20, 2019 3:03 pm

You answered your own question! A completely filled (e.g. Cu, Ag, Au) or half-filled (e.g. Cr) d subshell is more stable than having an filled s subshell and a d subshell with 4 or 9 electrons.

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