Half Full d^5 and Full d^10 Subshells

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keyanabogan 2J
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Joined: Wed Sep 21, 2016 2:56 pm

Half Full d^5 and Full d^10 Subshells

Postby keyanabogan 2J » Wed Oct 26, 2016 8:07 pm

I understand that elements with a half full or full subshell are more stable, but I don't understand when you're allowed to do this. Is it just with elements with a subshell of 3d^4 4s^2, or 3d^9 4s^2, that are able to take an electron from the s-orbital and put it in the d-orbital?

Lexi Nadler 1H
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Re: Half Full d^5 and Full d^10 Subshells

Postby Lexi Nadler 1H » Wed Oct 26, 2016 8:25 pm

I'm pretty sure the exception applies to any configuration ending in d^4 or d^9. Watch out for chromium and copper!

Ara Yazaryan 1E
Posts: 44
Joined: Wed Sep 21, 2016 2:59 pm

Re: Half Full d^5 and Full d^10 Subshells

Postby Ara Yazaryan 1E » Wed Oct 26, 2016 9:26 pm

The only exceptions we are expected to know are Cu and Cr, which in this case would be 4s1 3d5 and 4s1 3d10 respectively.

Brenton Hwee 2J
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Re: Half Full d^5 and Full d^10 Subshells

Postby Brenton Hwee 2J » Thu Oct 27, 2016 2:11 pm

Is there an exception for Cobalt ions too?

Melanie_Wong_1K
Posts: 22
Joined: Fri Jul 22, 2016 3:00 am

Re: Half Full d^5 and Full d^10 Subshells

Postby Melanie_Wong_1K » Thu Oct 27, 2016 4:14 pm

There would only be an exception for the Co^2- ion which acts like Cu. It's electron configuration would then be [Ar] 3d^10 4s^1.


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