This is shown in the diagram below. ... Example – Carbon monoxide contains one carbon atom joined to one oxygen atom, so it has the formula CO. Next page. Covalent compounds.

This diagram shows that one carbon atom and two oxygen atoms combine to make up the units of carbon dioxide. Its chemical formula is written as CO 2 . You may be required to use a key to draw your ...

Molecules are built step by step, and if one particular atom needs to be changed, the whole molecule must go back to the drawing board and the entire process starts again. “There’s a cost–benefit ...