Now that we have a grasp on the relative energies of the atomic orbitals we can start populating them with electrons. The two methods we use to indicate how electrons fill in the atomic orbitals are electron configurations and orbital block diagrams.
6.8 Electron Configurations and Block Diagrams Overview
6.8 Electron Configuration and Orbital Block Diagram for Elements 1-18
6.8 Electron Configuration and Orbital Block Diagram for Elements 19-30
In addition to determining the electron configurations for atoms, we can also determine the electron configurations for ions.
6.8 Electron Configuration of Ions
Now that we have written out the electron configurations for atoms and ions, we need to distinguish each electron from each other. Quantum numbers are used to distinguish each electron from another, much like a ticket to a sporting event or concert distinguishes one seat from another.
6.5 Quantum Numbers
6.5 Assigning Quantum Numbers to N
6.5 Assigning Quantum Numbers to Cr