Provides a great deal of elemental information about the chemical element holmium. There are audio files demonstrating the correct pronunciation of the element name, pictures showing the electron shells, information on isotopes,...

This WebElements site provides a great deal of elemental information. There are audio files demonstrating the correct pronunciation of the element name, pictures showing the electron shells, and information on isotopes, properties and more.

This site talks about ionic, polar covalent, and non-polar covalent bonding.

This site provides a detailed overview of atoms. Content explores an atom's structure, as well as what ions are, how atoms bond, what compounds are (including how to name compounds), and what isotopes are.

View the approximate locations of electrons in valence shells 1s through 4f.

This lesson focuses on the periodic table and the configurations. In the modern periodic table, elements are in order of atomic number in periods and groups. Electronic configurations model how electrons are arranged in atoms. A link to...

[Free Registration/Login may be required to access all resource tools.] Covers electron configurations of transition elements.

[Free Registration/Login may be required to access all resource tools.] Covers electron configurations of transition elements.

This lesson will define the Octet Rule and how this effects an atom's stability. It is 4 of 5 in the series titled "Octet Rule."

In this interactive activity from ChemThink, students will learn about covalent molecules and how the VSEPR theory predicts the shapes of covalently-bonded molecules.

[Free Registration/Login may be required to access all resource tools.] Covers transition metal, ionization of transition metals, and inner shell electrons.