Common Polyatomic Ions

Question 1

Sulfite

Answer 1

SO₃^2-

Question 2

Chlorite

Answer 2

ClO₂^-

Question 3

Sulfate

Answer 3

SO₄^2-

Question 4

Hydrogenphosphate

Answer 4

HPO₄^2-

Question 5

Ethanoate (Acetate)

Answer 5

CH₃COO^-

Question 6

Dichromate

Answer 6

Cr₂O₇^2-

Question 7

Nitrite

Answer 7

NO₂^-

Question 8

Hydrogencarbonate

Answer 8

HCO₃^-

Question 9

Hydroxide

Answer 9

OH^-

Question 10

Phosphate

Answer 10

PO₄^3-

Question 11

Cyanide

Answer 11

CN^-

Question 12

Chromate

Answer 12

CrO₄^2-

Question 13

Hypochlorite

Answer 13

ClO^-

Question 14

Permanganate

Answer 14

MnO₄^-

Question 15

Dihydrogenphosphate

Answer 15

H₂PO₄^-

Question 16

Perchlorate

Answer 16

ClO₄^-

Question 17

Nitrate

Answer 17

NO₃^-

Question 18

Hydrogensulfate

Answer 18

HSO₄^-

Question 19

Carbonate

Answer 19

CO₃^2-

Question 20

Ammonium

Answer 20

NH₄⁺

Question 21

Chlorate

Answer 21

ClO₃^-