Question

3. What are
polyatomic ions? Give examples.
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Answer 1

Explanation:

Polyatomic ions: Those ions which are formed from groups of joined atoms are called polyatomic ions. Compound ions are also called polyatomic ions. Ammonium ion NH4+, is a compound ion which is made up of two types of atoms joined together nitrogen and hydrogen.

Answer 2

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A polyatomic ion, also known as a molecular ion, is a charged chemical species(ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit.

Polyatomic ions are ions which consist of more than one atom. For example, nitrate ion, NO3-, contains one nitrogen atom and three oxygen atoms. The atoms in a polyatomic ion are usually covalently bonded to one another, and therefore stay together as a single, charged unit.