Group ions contain two or more atoms and usually have a negative charge. The formulae of these ions can be found in the data booklet. We can take the number of charges on the ion as the valency of the ...

For example, the formula H 2 O shows that a water molecule contains two hydrogen atoms and one oxygen atom.

Some chemical formulas, like H2O (a.k.a. water), are almost as familiar to us as the words themselves. But why do we write them the way we do? The answer goes back to ...

While we refer to substances by their common names in everyday life, all these substances have a chemical name and a chemical formula that scientists and researchers use. The system of chemical naming ...

Nature Chemical Biology is committed to enhancing interdisciplinary communication and features online content to increase the accessibility of chemical information for our readers. The adage that “a ...