An ion is a charged particle. A polyatomic ion is a group of covalently bonded atoms that, as a whole, have a charge.
Chat with our AI personalities
The polyatomic ion for nitrite is NO2-.
CaSO4 is a polyatomic ionic compound. It consists of a metal cation (Ca2+) and a polyatomic anion (SO42-) that are attracted to each other through ionic bonds.
The polyatomic ion in Ag2CO3 is carbonate (CO3)^2-.
Polyatomic ions are named with their specific names, regardless of their overall charge. When naming an ionic compound with a polyatomic ion, the name of the cation is written first followed by the name of the anion (polyatomic ion).
The subscript outside the parentheses applies to all the elements within the polyatomic ion. It indicates how many of the entire polyatomic ion are present in the compound.