Polyatomic ion

Ions which are formed when a group of atoms gains or loses electrons.

Some common Polyatomic Ions are:

• Acetate

• Ammonium

• Carbonate

• Chlorate

• Chlorite

• Chromate

• Cyanide

• Dichromate

• Hydronium

• Hydroxide

• Nitrate

• Nitrite

• Phosphate

• Sulfate

• Sulfite