Check Understanding Polyatomic ions

What is a polyatomic ion

• A molecule that has lost or gained electrons

• An ion with more than one atom

• An atom with a neutral charge

• An ion from elements in column 18

Which ion is OH-

• phosphate

• carbonate

• sulfate

• hydroxide

Which ion is HCO₃^-

• acetate

• carbonate

• bicarbonate

• sulfate

Which ion is C₂H₃O₂^-

• acetate

• sulfite

• nitrite

• hydroxidee