Naming Monatomic Ions and Ionic Compounds
Please read this Khan Academy page on the naming of ions with only 1 atom (monatomic ions) and ionic compounds.
To help you recall the charge of anions and cations, remember that an anion is "A Negative ION", and that cat-ions are paws-itive.
After you have read and absorbed the information, please go on to the assignment on naming ionic compounds.