Polyatomic Ions

• perchlorate ion

• hydrate ion

• hydronium ion

• hydroxide ion

Hydrogen Carbonate

• HCO₃^–

• CO₃^2–

• CrO₄^2–

• CN^–

NO₂^-

• Nitride
• Nitrate
• Nitrite
• Ammonium

Nitrite

• N^3-

• NO₃^2-

• NO₂^-

• NO^4-

What is the oxidation number of a sulfate ion?

(a)  

What is the oxidation number of the hydroxide ion?

(a)  

What is the oxidation number of the ammonium ion?

(a)  

What is the oxidation number of a phosphate ion?

(a)  

Formula for Sulfate polyatomic ion?

• SO₄^-2

• SO₄

• SO₄⁺²

Formula of Chlorate polyatomic ion?

• ClO^-1

• ClO₃

• ClO₃^-1