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Topic: Electron Configurations of Ground State Atoms  (Read 2564 times)

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Offline Boxxxed

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Electron Configurations of Ground State Atoms
« on: October 27, 2010, 03:51:30 PM »
It says in my book the order of assigning electrons is...

1s, 2s, 2p, 3s, 3p, 4s, 3d

Why does it go to 4s before 3d?
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Offline Schrödinger

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Re: Electron Configurations of Ground State Atoms
« Reply #1 on: October 27, 2010, 04:13:13 PM »
Hint : n+l rule
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Offline Boxxxed

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Re: Electron Configurations of Ground State Atoms
« Reply #2 on: October 27, 2010, 04:17:09 PM »
ah thanks
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Offline Boxxxed

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Re: Electron Configurations of Ground State Atoms
« Reply #3 on: October 27, 2010, 07:05:12 PM »
I figured out a numerical method to figure out the order. It would have been helpful if they included it in the book instead of giving a simple example of the first few orders. I understand the concept superficially. I don't know why energy levels progress the way they do in the orbitals.
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