Robuta

https://openstax.org/books/chemistry-atoms-first/pages/3-4-electronic-structure-of-atoms-electron-configurations
The energy of atomic orbitals increases as the principal quantum number, n, increases. In any atom with two or more electrons, the repulsion between the...
electronic structureatomsconfigurationschemistry
https://openstax.org/books/organic-chemistry/pages/1-3-atomic-structure-electron-configurations
The lowest-energy arrangement, or ground-state electron configuration, of an atom is a list of the orbitals occupied by its electrons. We can predict th...
atomic structureelectron configurationsorganic chemistryopenstax