Ground State Electron Configuration for Ions

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304621080
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Joined: Fri Sep 25, 2015 3:00 am

Ground State Electron Configuration for Ions

Postby 304621080 » Fri Oct 16, 2015 1:42 pm

Question number 3.19 in the book for chemistry 14A has a part d in which the question is to write the ground state electron configuration for Br-. After coming up with the solution [Ar]3d10,4s2,4p6 the book solution manual put it as [Kr]. I understand that the book solution is saying the molecule is similar to Kr, but I was wondering if my answer is also a correct way to write it on tests and quizzes?

FabianNajjar3C
Posts: 9
Joined: Fri Sep 25, 2015 3:00 am

Re: Ground State Electron Configuration for Ions

Postby FabianNajjar3C » Fri Oct 16, 2015 2:55 pm

I believe that lavelle would actually prefer your way, as he said that during one of his lectures. It proves that you can write out the electron configuration completely, as opposed to just writing the symbol for an element.

Jonathan Shih 3H
Posts: 37
Joined: Fri Sep 25, 2015 3:00 am

Re: Ground State Electron Configuration for Ions

Postby Jonathan Shih 3H » Mon Oct 19, 2015 1:03 am

Honestly, it shouldn't matter what version you put. Either shows your understanding of the number of electrons after being ionized.

Chem_Mod
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Re: Ground State Electron Configuration for Ions

Postby Chem_Mod » Mon Oct 19, 2015 11:10 pm

That is correct. If the shorthand notation is simply the noble gas, it is perfectly fine to put.


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