Electron configuration order

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Jennifer Yang 3F
Posts: 56
Joined: Wed Sep 11, 2019 12:17 am

Electron configuration order

Postby Jennifer Yang 3F » Fri Oct 04, 2019 11:44 pm

When you write an electron configuration, does the order matter? For instance, in the homework question, it says [Ar]3d^3 4s^2, which is not in the order of 1s2s2p3s3p4s3d4p5s. Is there an any sort of rule you have to follow when you write an electron configuration?

Naneeta Desar 1K
Posts: 106
Joined: Fri Aug 09, 2019 12:15 am

Re: Electron configuration order

Postby Naneeta Desar 1K » Fri Oct 04, 2019 11:48 pm

I think in the book they are referring to the shorthand configuration of that element.

Akshay Chellappa 1H
Posts: 59
Joined: Wed Sep 11, 2019 12:15 am

Re: Electron configuration order

Postby Akshay Chellappa 1H » Sat Oct 05, 2019 12:01 am

Notation is written by increasing energy, so maybe because the d-orbital is not completely filled it actually has a lower energy level than the s-orbital.

Nawal Dandachi 1G
Posts: 102
Joined: Sat Sep 28, 2019 12:16 am

Re: Electron configuration order

Postby Nawal Dandachi 1G » Sat Oct 05, 2019 12:07 am

I agree with the commenter before me. The position of the 3d orbital is at a higher level than the 4s orbital; therefore, the 4s orbital would fill up before the the 3d orbital.

Kelsey Ash 1D
Posts: 50
Joined: Wed Sep 18, 2019 12:16 am

Re: Electron configuration order

Postby Kelsey Ash 1D » Mon Oct 14, 2019 8:36 pm

I think it just cuts out the middle ground and jumps to the next orbital so you are supposed to assume that the previous orbital is filled in order for the element to be in that position.


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