Can Aufbau and Hund's Rule explain electron filling after EC?

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The discussion centers on whether an electron from the 2s subshell can fill a vacancy in the 1s subshell following electron capture. Participants express skepticism about this possibility, citing quantum numbers as a key factor in electron configuration. The conversation references the Aufbau principle and Hund's Rule, which govern the filling of subshells and orbitals. There is a call for a clearer explanation regarding these principles and their implications for electron filling. Ultimately, the topic remains unresolved, highlighting the complexity of electron behavior in atomic structure.
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Is it possible that an electron of the 2s orbit fills the gap in 1s after electron capture?

i believe no and it has something to do with the quantum-numbers but i can't find a conclusive explanation. or maybe i am totally wrong.
 
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Notgiven said:
Is it possible that an electron of the 2s orbit fills the gap in 1s after electron capture?

i believe no and it has something to do with the quantum-numbers but i can't find a conclusive explanation. or maybe i am totally wrong.

Hint : What does Aufbau principle and Hund's Rule of maximum multiplicity state ? And please use the words- subshells and orbitals instead of orbits !

Edit: Need to be moved to chemistry section..
 
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