What are ions?
Ions are atoms or molecules with a non-zero net charge. It could be positive or negative.
Number of electrons in an ion is not equal to number of protons.
If number of protons are more then that ion is cation ,if number of electrons are more than number of protons then is is an anion.
Example of cation
Ions with more than one atom of element are called polyatomic ions .
Fact: Ions exist in water in equilibrium with water molecules.
There are several ways to form ions like disolving a salt (with ionic bond) in water and by passing electricity.
Ions can be atomic, i.e.
And, so if we gots a representation of
This is something to important to learn, because EVERY CHEMICAL REACTION conserves mass and charge.....