And my students only have to memorize 25 of these! Common Polyatomic ions, but still not all of them!
Common Polyatomic Ions
Polyatomic Ions (in a different language, but thankfully, science is universal!)
Chemistry Formula Sheet | Polyatomic Ions Chart
A Guide to Common Polyatomic Ions v2
common polyatomic ions
Polyatomic Ion charges
Polyatomic ion - Wikipedia, the free encyclopedia