I’m working on Unit 2 of Bio101, Basic Chemistry and I had some comments about the content.
I felt there was a bit of jump between the videos for “more on orbitals and electron configuration” and “valence electrons” as in “Valence electrons” then he’s talking about “backfilling” the previous shell with electrons, and the central section of the periodic table, but he hadn’t got up to that in the previous video. There’s another video he did where he explains it but its not in the course.
This jump is in strong contrast with the first three sections of Unit 2 which were very repetitive - about the basic atomic structure and protons, neutrons, and electrons. So its quite inconsistent in pace and difficulty.
I hope this feedback is useful.