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Special Cases

Posted: Sun May 06, 2018 10:45 pm
by Jose Hernandez 1D
How do you know which elements are the ones with special cases for their electron configuration?

Re: Special Cases

Posted: Sun May 06, 2018 10:51 pm
by Chem_Mod

Re: Special Cases  [ENDORSED]

Posted: Sun May 06, 2018 10:54 pm
by 404975170
There is no way to tell from just looking at the periodic table because they have been found to be exceptions through experimentation. The only ones I believe that we need to know for the test are Cu and Cr like Dr. Lavelle said, it is also easy to remember that Gold and Silver are too.

Re: Special Cases

Posted: Mon May 07, 2018 1:45 pm
by Haison Nguyen 1I
You just have to remember that the elements in d4 and d9 fall under the exceptions. It's because it's better to have all the orbitals half full than one full and one not have any at all.