Question

A .Name the following:- A Polyatomic ion with charge of -2. ​

Answer 1

Answer:

carbonate ion

The carbonate ion consists of one carbon atom and three oxygen atoms, and carries an overall charge of 2−

Answer 2

The polyatomic ion with charge of -2 is SO₄⁻² ​i.e. is Sulphate.

• A polyatomic ion is defined as the group of atoms that contains any charge.
• The common polyatomic ions usually have a negative charge.
• Polyatomic ions contain any charge as it gains or loses electrons.

Hence, a Polyatomic ion with a charge of -2 is SO₄⁻² ​i.e. is Sulphate.