Answer:
9 polyatomic ions
Polyatomic Formulas - Polyatomic ions are made from more that one atom. This group of atoms act together as one unit with a single charge. Each of the polyatomic ions have a unique name.
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The 9 polyatomic ions to know and write on your notecard:
Name Charge Formula
Phosphate 3-. PO43-
Hydronium 1+ H3O+
Ammonium. 1+ NH4+
6 more rows
Explanation:
All the elements on the periodic table start with a capital letter and only some of them have a second letter that is lower case. So if you see two capital letters together in a ion then you will know that it is a polyatomic.
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