Some non-metals will tag-team together to form their own ionic group. That's what a polyatomic ion is. Being negatively charged ions, they will need to bond with a metal to become stable.
For more details, check out the following video(s):
Lewis structure of polyatomic ions (https://www.youtube.com/watch?v=NKL6T4wcnpg)
Application of aluminum sulfate (https://www.youtube.com/watch?v=yjVFYm9zYag)
My Gr.9 water purification plant video essay (https://www.youtube.com/watch?v=7vKNVjD7Cq8)
TimeCodes:
0:00 - Introduction
0:32 - Polyatomic Ions
6:36 - Polyatomic Compounds (CP. 9)
Downloads:
CoursePack with Answer Keys:
https://drive.google.com/drive/folders/1hGZpoUDKPXTvfA0giVKXDYDsGTNQJ9a1
Gr. 10 Chemistry Playlist:
https://www.youtube.com/watch?v=K6WNGB8kYXA&list=PLmLaQzURFxc2TQCIkXFRZfn4HDkiyqDli
Patreon:
https://www.patreon.com/scienceNme
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