Locate the polyatomic ion in the compound KNO3

Polyatomic ion is potassium nitrate is nitrate ion .

Explanation:

Polyatomic ions are those species of ions with more than one atom of an same element or different elements .

For example : sulfate ions, bicarbonate ion etc.

In the given compound ,

Cation is potassium ion =  

Anion is nitrate ion =

Polyatomic ion is potassium nitrate is nitrate ion .This is because nitrate ions has single atom of nitrogen and three atoms of oxygen along with charge of single negative unit.

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