Tetravalent
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Tetravalent".

In chemistry, a tetravalence is the state of an atom with four electrons available for covalent chemical bonding in its valence (outermost electron shell). An example is methane (CH₄): the tetravalent carbon atom forms a covalent bond with four hydrogen atoms. The carbon atom is called tetravalent because it forms 4 covalent bonds.

This chemistry article is a stub. You can help Wikipedia by expanding it.