Laying the Foundation
I'm just starting the third week of my Foundations Inorganic Course, which I like to call GenChem III. This is the course where I tell my science majors the "why?" behind all those pesky Periodic Trends we made them memorize in GenChem. I teach my course pretty heavily focused on bonding and much less on Periodicity. But we do spend some time early on in the course on the orbitals, shielding effects and the repercussions on periodicity.