Electron Configuration-(Sn)

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arina_m 1A
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Electron Configuration-(Sn)

Postby arina_m 1A » Sun May 06, 2018 10:51 pm

During lecture of Friday, Dr. Lavelle said that the electron configuration of Tin (Sn) was [Kr]4d^10 5s^2 5p^2 why do we write it in this order? Would [Kr]5s^2 4d^10 5p^2 be considered wrong?

Chem_Mod
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Re: Electron Configuration-(Sn)

Postby Chem_Mod » Sun May 06, 2018 10:53 pm

Because it is written in terms of lowest energy. It becomes more important when you consider ions since you would lose the 3rd electron from the 5s orbital, not the 4d orbital. If you write in the latter form, it will be wrong.

danielruiz1G
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Re: Electron Configuration-(Sn)

Postby danielruiz1G » Sun May 06, 2018 11:30 pm

When writing this out just remember that it is written from the lower energy levels to highest so "p,s,d,f" and must be filled in that order.

Jennifer 1G
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Re: Electron Configuration-(Sn)

Postby Jennifer 1G » Wed May 09, 2018 2:38 am

danielruiz1G wrote:When writing this out just remember that it is written from the lower energy levels to highest so "p,s,d,f" and must be filled in that order.


May you please explain this as the example above shows the order to be d, s and p. Thank you!

Alejandro Salazar 1D
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Re: Electron Configuration-(Sn)

Postby Alejandro Salazar 1D » Fri May 11, 2018 8:14 pm

Jennifer 1G wrote:
danielruiz1G wrote:When writing this out just remember that it is written from the lower energy levels to highest so "p,s,d,f" and must be filled in that order.


May you please explain this as the example above shows the order to be d, s and p. Thank you!



I'm not sure if this helps. See attachment. You place the d orbital before the s-orbital after the third row.
Attachments
20180511_201511.jpg

chemlover
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Re: Electron Configuration-(Sn)

Postby chemlover » Sat Jun 09, 2018 1:49 pm

I just remember that when writing them, for the energy levels,its f,d,s,p but in general you refer to the orbitals as s,p,d,f


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