Special Orbitals

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Lenaschelzig1C
Posts: 21
Joined: Fri Apr 06, 2018 11:05 am

Special Orbitals

Postby Lenaschelzig1C » Sun Apr 15, 2018 10:47 pm

How do you know when an element fills the orbitals abnormally? Is there something that indicates this?

Chem_Mod
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Re: Special Orbitals

Postby Chem_Mod » Sun Apr 15, 2018 11:42 pm

Are you talking about the electron configurations for the ground state of the elements? If so, it's based on the quantum mechanic result of having the lowest energetic state. It is just easier to memorize these exceptions since it requires trying to solve the quantum mechanic problem.

Isabella Barkett 1G
Posts: 24
Joined: Fri Apr 06, 2018 11:01 am

Re: Special Orbitals

Postby Isabella Barkett 1G » Tue Apr 24, 2018 9:52 pm

I think there are two anomalous configurations when an element fills the orbital 'abnormal': chromium and copper which do not seem to fit the pattern. Chromium is energetically more stable to have 3d5 then pair up the 4s orbital ((Ar)4s1 3d5). Copper has extra stability due to a full set of 3d orbitals, providing the incentive for the s electron to be used in the last 3d orbital ((Ar)4s1 3d10).


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