Definition of Polyatomic Ion



The groups of atoms that are covalently bonded with each other and possess a positive or a negative charge due to the formation of an ionic bond are termed as polyatomic atoms. These polyatomic ions tend to behave as a single unit. Moreover, it is said that the compounds which are formed as a result of a combination of ions are known as polyatomic ionic compounds.

 


These ions are able to take part in many chemical reactions like acid-base reactions, precipitation, and displacement reactions. The polyatomic ions are soluble in water and they are also able to conduct electricity.

 


Examples of Polyatomic Ions:

Ammonium (NH4)+, carbonate (CO32-), nitrate NO3- etc. are examples of polyatomic ions.

 


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