define polyatomic ions give one example of it
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A polyatomic ion is an ion composed of two or more atoms. Examples: The hydroxide cation (OH-) and the phosphate cation (PO43-) are both polyatomic ions.
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Those ions which are formed groups of joined atoms are called polyatomic ions.
eg - Ammonium ointment NH+ I'd a polyatomic ion which is made up of two types of atom. Nitrogen (N) and hydrogen (H) joined together.
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