Here you can find out about hydrogen, the first element in the periodic table. Content includes shell information, where to find it in nature, and why it is helpful to us.

Click on the left navigation terms for some great information about the 6th element in the periodic table, "carbon." Content focuses on carbon's electrons, where you can find carbon in nature and in the home, and how carbon combines with...

Here you can find some great information about the 7th element in the periodic table, "nitrogen." Content focuses on nitrogen's electrons, where you can find nitrogen in nature and in the home, and how nitrogen combines with other elements.

Here you can find some great information about the 15th element in the periodic table, "phosphorus." Content focuses on phosphorus' electrons, where you can find phosphorus in nature and in the home, and how phosphorus combines with...

The 17th element in the periodic table is defined, chlorine. Find out how many electrons chlorine has and where you can find it in nature and in the home.

Chem4Kids looks at the 18th element in the periodic table, argon. Content focuses on argon's electrons, where you can find argon in nature and in the home, and how argon combines with other elements.

The periodic table was laid out using valences or the electrons in the outermost shell.

An overview of chemical bonding and how valence electrons play a major role in these processes.

The number of protons in the atom of an element determines its place in the Periodic Table. The number of electrons in an atom is the same as the number of protons. These electrons are arranged in shells or 'energy levels' around the...

Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the properties of the atoms individually in relation to the main group elements of the Periodic Table.

This section from the online textbook "An Introduction to Chemistry" provides helpful hints to writing abbreviated electron configurations. Also learn how to look up the atom's outer shell electrons.

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

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

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

Good site includes the basics of arrangement, hybridization, and gemetry.

An advanced explanation of the valence shell electron pair repulsion (VSEPR) theory describes specific molecular models involving digonal, trigonal, tetrahedral, and octahedral coordination, as well as central atoms with five bonds....

[Free Registration/Login may be required to access all resource tools.] The following online tutorial explains the basis of VSEPR theory. It helps students predict the shapes of molecules and polyatomic ions using VSEPR theory and it...

[Free Registration/Login may be required to access all resource tools.] In this interactive learning module, students will learn a technique to predict molecular geometry based on a molecule's Lewis electron dot structure.

Here you can find some great information about the 14th element in the periodic table, "silicon." Content focuses on silicon's electrons, where you can find silicon in nature and in the home, and how silicon combines with other elements.

A quiz on chemical bonding and valence electrons.

This essay, written for Teachers' Domain, describes the foresight and pattern recognition that Russian chemist Dmitri Mendeleyev used to develop the modern periodic table of elements.

Explanation of Noble gases and of how atoms attempt to fill their outermost valence shells for stability.