Common Polyatomic ion Formulas

Question 1

PO₃^3-

Answer 1

Phosphite

Question 2

NH₄⁺

Answer 2

Ammonium

Question 3

ClO₄^-

Answer 3

Perchlorate

Question 4

HCO₃^-

Answer 4

Hydrogen Carbonate (Bicarbonate)

Question 5

NO₃^-

Answer 5

Nitrate

Question 6

ClO₃^-

Answer 6

Chlorate

Question 7

SO₃^2-

Answer 7

Sulfite

Question 8

C₂H₃O₂^-

Answer 8

Acetate

Question 9

CN^-

Answer 9

Cyanide

Question 10

HPO₄^2-

Answer 10

Hydrogen Phosphate

Question 11

PO₄^3-

Answer 11

Phosphate

Question 12

ClO₂^-

Answer 12

Chlorite

Question 13

HSO₄^-

Answer 13

Hydrogen Sulfate (Bisulfate)

Question 14

OH^-

Answer 14

Hydroxide

Question 15

NO₂^-

Answer 15

Nitrite

Question 16

ClO^-

Answer 16

Hypochlorite

Question 17

SO₄^2-

Answer 17

Sulfate

Question 18

HSO₃^-

Answer 18

Hydrogen Sulfite (Bisulfite)

Question 19

H₂PO₄^-

Answer 19

Dihydrogen phosphate

Question 20

CO₃^2-

Answer 20

Carbonate