AP4: the meaning of l (lower case L) and n. Numbers of nodes and orbital types. How they all fit together and a one-dimensional energy graph of orbitals.
AP1: fitting the orbitals all together, the energy graph and electron configuration (including the aufbau principle and the Pauli Exclusion Principle…Hund’s rule still to come)
H8: periodic table project (in groups) and electron configuration.
