Answer
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Step 1: Recall the concept of polyatomic ions.
Polyatomic ions are groups of atoms that carry a positive or negative charge. They often appear in ionic compounds and can be identified by their charge.
Step 2: Identify the polyatomic ion NO$_3^-$
Nitrate (NO$_3^-$) is a common polyatomic ion with a -1 charge.
It consists of one nitrogen atom (N) and three oxygen atoms (O).
Final Answer
The name of the polyatomic ion NO$_3^-$ is nitrate.
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