Electron Config for Pd versus Nickel

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Luyan Zhang - 2D
Posts: 103
Joined: Sat Jul 20, 2019 12:16 am

Electron Config for Pd versus Nickel

Postby Luyan Zhang - 2D » Fri Nov 01, 2019 12:12 am

Pd and Ni are in the same group, but electron configuration for Nickel is [ ]3d8 4s2, and electron configuration for Pd is [ ]4d10. Why does the electron from the s-orbitals from Pd move to d-orbitals to fill the full-shell, but the electrons in Ni don't?

AArmellini_1I
Posts: 107
Joined: Fri Aug 09, 2019 12:15 am

Re: Electron Config for Pd versus Nickel

Postby AArmellini_1I » Fri Nov 01, 2019 1:11 am

I don't know why specifically in this case this occurs, but Lavelle mentioned that the greater the period the more exceptions to our basic rules.

Karyn How 1J
Posts: 50
Joined: Thu Jul 25, 2019 12:16 am

Re: Electron Config for Pd versus Nickel

Postby Karyn How 1J » Fri Nov 01, 2019 1:37 am

I think this might has to do with the 4th energy level and how energy level differences become smaller as it gets higher. I think the 4th level is close enough to the 5th energy level that maybe the 4d and the 5s are extremely close but the 4d is filled first because it’s lower.


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