That is wrong and will give you wrong answers. All other rules hold. You need roman numerals for transition metals, and the total charge must equal 0. Covalent The other binary compound is called covalent. If you have noticed, ionic compounds generally are metals joined to non metals, with exceptions.
Covalent compounds are two non metals put together.
This is by far the easiest way to name compounds. Just add the appropriate prefix to each of their names, along with the -ide suffix on the second element. It's reserved only for the -ide part. Sulfur Hexafluoride Don't get this mixed up with the ionic stuff. You might be tempted to write Fe 2 O 3 as Di-iron Trioxide because it's very easy, but that is very wrong.