The president may want you, but unless you also win the approval of the U.S. Senate, it's back to the shoe store on Monday for you. Across the federal government, nearly 1,200 executive level jobs may be filled only by individuals appointed by the president and approved by a simple majority vote of the Senate.
The Aufbau principle states that electrons must be added to elements and ions in a VERY specific order with the lowest energy level being filled first and the highest last. Th â¦ is is where the Aufbau triangle comes in. It shows the order in which the energy levels must be filled. 10 people found this useful.
Chemistry Assignment Help >> f-block Elements Assignment Help The f-block groups consist of those elements whose ions or atoms have valence electrons in f-orbitals. In fact electronic configurations may be slightly different from what is predicted by the Aufbau principle.