Electron Configuration

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Chase Yonamine 1J
Posts: 62
Joined: Fri Sep 28, 2018 12:17 am

Electron Configuration

Postby Chase Yonamine 1J » Thu Nov 01, 2018 10:35 pm

What is the correct electron configuration of Br? [Ar] 3d10 4s2 4p5 or [Ar] 4s2 3d10 4p5?

anthony_trieu2L
Posts: 60
Joined: Fri Sep 28, 2018 12:29 am

Re: Electron Configuration

Postby anthony_trieu2L » Thu Nov 01, 2018 10:52 pm

A more conventional way to write the electron configuration of Br is [Ar] 4s2 3d10 4p5 since the 4s subshell is filled first. However, either is correct.

Manu Vohra 1L
Posts: 61
Joined: Wed Oct 03, 2018 12:15 am

Re: Electron Configuration

Postby Manu Vohra 1L » Thu Nov 01, 2018 11:35 pm

According to the textbook, [Ar] 4s23d104p5 is the correct way to write the electron configuration of Br.

Brian Chhoy 4I
Posts: 66
Joined: Fri Sep 28, 2018 12:16 am

Re: Electron Configuration

Postby Brian Chhoy 4I » Thu Nov 01, 2018 11:56 pm

The 4s orbital is written before the 3d orbital to show that it is of lower energy, since the farther the orbital you go, the more energy it has.


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