Electron Configuration

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melissa_dis4K
Posts: 106
Joined: Fri Sep 28, 2018 12:28 am

Electron Configuration

Postby melissa_dis4K » Sun Nov 04, 2018 9:10 pm

For the electron configuration of Pd I get [Kr]4d^8 5s^2 but it is [Kr] 4d^10. My question is do we change it to [Kr] 4d^10 because we should fill in the entire d orbital before continuing to the 5s orbital? Is this always?

Andreana Vetus 1A
Posts: 28
Joined: Fri Sep 28, 2018 12:17 am

Re: Electron Configuration

Postby Andreana Vetus 1A » Sun Nov 04, 2018 9:30 pm

Yes, as the electron will be happier with a full d orbital vs an s orbital. This is always.

Albert_Luu3K
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

Re: Electron Configuration

Postby Albert_Luu3K » Sun Nov 04, 2018 9:33 pm

Very interesting, Melissa. I googled this phenomenon, and it says that this is the electron configuration because experiment has shown. Our usual methods don't apply to this Pd because it's an exception due to what has been found in experiment. I doubt this we will need to know this. We'll only need to know the first row of 3d elements.

Lydia Luong 4L
Posts: 59
Joined: Fri Sep 28, 2018 12:24 am

Re: Electron Configuration

Postby Lydia Luong 4L » Sun Nov 04, 2018 10:33 pm

Yes, I think it should be [Kr]4d^10

Carlos Gomez 3H
Posts: 29
Joined: Fri Sep 28, 2018 12:25 am

Re: Electron Configuration

Postby Carlos Gomez 3H » Sun Nov 04, 2018 10:37 pm

Does this mean that Pd is another exception along with Cu and Cr?

Richard Ku 4H
Posts: 29
Joined: Fri Oct 05, 2018 12:16 am

Re: Electron Configuration

Postby Richard Ku 4H » Sun Nov 04, 2018 10:42 pm

Yes, because the atom would be more stable if the entire of an orbital is filled out rather than partially filled.

Josceline 3J
Posts: 33
Joined: Fri Sep 28, 2018 12:21 am

Re: Electron Configuration

Postby Josceline 3J » Sun Nov 04, 2018 10:59 pm

Also, you should take into account that it is 4d^8 and that is always full so it will do anything to get full, hence reach stability. And yeah also because the 4d orbital needs to get filled before the 5s

Jack Hewitt 2H
Posts: 67
Joined: Fri Sep 28, 2018 12:27 am

Re: Electron Configuration

Postby Jack Hewitt 2H » Thu Dec 06, 2018 6:12 pm

melissa_dis4F wrote:For the electron configuration of Pd I get [Kr]4d^8 5s^2 but it is [Kr] 4d^10. My question is do we change it to [Kr] 4d^10 because we should fill in the entire d orbital before continuing to the 5s orbital? Is this always?

Yes this is always. It is one of the exceptions to the octet rule.

Zachary Menz 1D
Posts: 32
Joined: Wed Nov 07, 2018 12:17 am

Re: Electron Configuration

Postby Zachary Menz 1D » Sat Jul 06, 2019 4:36 pm

As others have said, this is an exception to the normal rules of electron configurations. As Dr. Lavelle said in class, the reasons behind this involve the fact that as the principal quantum number (n) increases, orbitals get closer and closer together. By the time that n=5, such as in your case, exceptions can more easily arise because of potential overlaps.

Daniel Kim 1D
Posts: 38
Joined: Wed Oct 03, 2018 12:17 am

Re: Electron Configuration

Postby Daniel Kim 1D » Sat Jul 06, 2019 6:13 pm

This might be one of the elements such as Cu and Cr that has been proven by experimental methods. Rather than trying to solve it out, probably one of the ones that should be memorized. However, professor Lavelle said we should only memorize Cu and Cr so we shouldn’t be too worried about that I’m pretty sure.


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