Aufbau principle<>gives<>the order of electron filling in an atom$$$the order of electron<>filling<>in an atom
4 Be able to explain why the energy levels in multielectron atoms differ from the levels in the hydrogen-like atom 5 Be able to state and apply the Pauli Exclusion Principle, Hund's Rule, and the Aufbau Principle.
Aufbau principle gives the order of electron filling in an atom.
What gives the order of electron filling in an atom?