Ordering of electrons in d-shell

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inlovewithchemistry
Posts: 104
Joined: Fri Sep 28, 2018 12:19 am

Ordering of electrons in d-shell

Postby inlovewithchemistry » Wed Oct 24, 2018 11:05 pm

How important is it to put, for example, 3d10 before 4s1? Does order matter even though you are conveying the same information? Are there any exceptions? Thanks!

Sophia_Kiessling_2L
Posts: 61
Joined: Fri Sep 28, 2018 12:26 am

Re: Ordering of electrons in d-shell

Postby Sophia_Kiessling_2L » Wed Oct 24, 2018 11:11 pm

You always put the d-block before the s-block there are no exceptions (at least from what I learned/got out of what was said in lecture)

Emmaraf 1K
Posts: 94
Joined: Sat Oct 20, 2018 12:16 am

Re: Ordering of electrons in d-shell

Postby Emmaraf 1K » Thu Oct 25, 2018 12:28 am

You put the subshells in order of their principal quantum number and then their angular momentum quantum number. Going from the s to the d subshells, for example the 4s and 3d, the 4s subshell becomes a higher energy when the 3d starts to be filled which is why the 4s should be written afterwards when doing the configurations.


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