Instructional Video9:18
Professor Dave Explains

Examples of s-p Mixing in Molecular Orbital Theory

12th - Higher Ed
Admittedly, my prior tutorial on MO theory was a little confusing, and had some errors. I wanted to make things right, so here's another one! This will clarify some of the basic concepts, and will also extend them to discuss a new...
Instructional Video8:13
Professor Dave Explains

Quantum Numbers, Atomic Orbitals, and Electron Configurations

12th - Higher Ed
Orbitals! Oh no. They're so weird. Don't worry, nobody understands these in first-year chemistry. You just pretend to, and then in second-year you learn them a little better, the following year a little better, and once you have a PhD...
Instructional Video4:28
msvgo

Filling of Orbital in Atoms

K - 12th
This nugget gives idea about Aufbau Principle, n+l rule, Pauli's Exclusion Principle and Hund's Rule.
Instructional Video4:12
Professor Dave Explains

Pseudo Noble Gas Electron Configurations

12th - Higher Ed
We've learned about electron configurations, and also about how this plays into ionization, given that elements will tend to ionize in such a way so as to achieve noble gas electron configuration. But certain transition metals will seek...
Instructional Video
Khan Academy

Khan Academy: Electron Configurations for the Second Period

9th - 10th
Introduction to Hund's rule. Shows quantum numbers for all second period elements. [12:12]
Instructional Video
Khan Academy

Khan Academy: Chemistry: Orbitals and Electron Configuration

9th - 10th
A detailed look at orbitals and an introduction to electron configuration. [14:31]