What are polyatomic ions? Give examples.<br /><br />
NCERT Class IX<br />
Sciences - Main Course Book<br /><br />
Chapter 3. Atoms and Molecules
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Polyatomic ions are ions which consist of more than one atom. For example, nitrate ion, NO3-, contains one nitrogen atom and three oxygen atoms. The atoms in a polyatomic ion are usually covalently bonded to one another, and therefore stay together as a single, charged unit.
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