Electron Configuration Exceptions [ENDORSED]

[Jessica Lutz 2E]

Do the exceptions with copper and chromium that we talked about in class continue with all of the elements in the same groups (five and eleven), like silver and gold for copper and molybdenum for chromium?

[Mika Sonnleitner 1A]

Yes, the exceptions would apply to all elements in the same groups as Chromium and Copper. Elements in groups 6 and 11 would have an electron configuration that includes nd4 or nd9, therefore it would be more stable if the d subshell was half full or completely full. In order to achieve this, one electron would have to be removed from the preceding s subshell.

[Shannon Wasley 2J]

My TA had said that they do continue down the columns, however we would not be asked specific questions about the electron configurations of those elements on the tests. We would only need to know that chromium and copper are exceptions to the electron configuration rule

[Tasnia Haider 1E]

The only exceptions we are required to know are Chromium and Copper.