Although this is the general order of orbital filling according to the Madelung rule , there are exceptions .
The actual electronic energies of each element are also dependent upon additional details of the atoms ( see Electron configuration # Atoms : Aufbau principle and Madelung rule ) .
Although this is the general order of orbital filling according to the Madelung rule , there are exceptions , and the actual electronic energies of each element are also dependent upon additional details of the atoms ( see Electron configuration # Atoms : Aufbau principle and Madelung rule ) .