Tetravalent
In chemistry, a tetravalent atom in a molecule has 4 electrons available for chemical bonding in its outer valence shell. For instance in methane the tetravalent carbon atom bonds to 4 hydrogen atoms.
In chemistry, a tetravalent atom in a molecule has 4 electrons available for chemical bonding in its outer valence shell. For instance in methane the tetravalent carbon atom bonds to 4 hydrogen atoms.