meaning of polyatomic ions with example...
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Polyatomic ions are ions which consist of more than one atom. For example, nitrateion, NO3-, contains one nitrogen atom and three oxygen atoms. The atoms in apolyatomic ion are usually covalently bonded to one another, and therefore stay together as a single, charged unit.
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it means it contains more than 1 atom eg 1 nitrogen atom contains 3 oxygen atoms
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