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2016-03-21T23:59:09+05:30
See ion means Compound composed of metals and non-metals contains charged species.the charged species are known as IONS. A group of atoms carrying a charge is known as a POLYATOMIC IONS.

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2016-03-22T10:29:02+05:30
Polyatomic ion is a group of ions having a charge. Eg: OH-, NH4+ etc....
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