Khan Academy: Electron Configurations in the 3d Orbitals

The creator of this collection of chemistry slides is clever! Electron configuration is explained as, click-by-click, orbitals are displayed and then each is subsequently filled with the proper amount of electrons. After the progression,...

Noble gas notation is used to write the electron configurations of the elements in the third and fourth periods. [13:08]

An introduction to the aufbau and Pauli Exclusion principles and orbital notation. [6:22]

Introduction to Hund's rule. Shows quantum numbers for all second period elements. [12:12]

An explanation of identifying the electron configurations of the D-block elements. [10:18]

Introduction to rules for electron configurations of d-block elements. Relative reactivity and energy of 4s and 3d electrons also discussed.

An explanation of various aspects of the f-block element Nd that includes, location on Periodic table, electron configuration shorthand based on Xe, and the full electron configuration. [5:56]

Why is the periodic table arranged the way it is? As pupils complete the electron configuration of the first 20 elements, they see the relationship to the rows and columns in the periodic table. The video instructor highlights these...

What does an atom look like? The instructor in a tutorial video models how to use the periodic table to determine the number of subatomic particles. He then uses the number of electrons to create an orbital diagram. Finally, Groves...

Electron location accounts for many properties of an element. A video lesson describes how to create electron dot diagrams. The instructor discusses electron shells and the number of electrons in each.