Common Polyatomic Ions

Question 1

AsO₄^3-

Answer 1

arsenate

Question 2

PO₄^3-

Answer 2

phosphate

Question 3

ClO₃^-

Answer 3

chlorate

Question 4

NO₃^-

Answer 4

nitrate

Question 5

SO₃^2-

Answer 5

sulfite

Question 6

SO₄^2-

Answer 6

sulfate

Question 7

HCO₃^-

Answer 7

hydrogen carbonate (bicarbonate)

Question 8

ClO₄^-

Answer 8

perchlorate

Question 9

S₂O₃^2-

Answer 9

thiosulfate

Question 10

CrO₄^2-

Answer 10

chromate

Question 11

CN^-

Answer 11

cyanide

Question 12

MnO₄^-

Answer 12

permanganate

Question 13

BO₃^3-

Answer 13

borate

Question 14

OH^-

Answer 14

hydroxide

Question 15

ClO₂^-

Answer 15

chlorite

Question 16

CH₃CO₂^-

Answer 16

acetate

Question 17

O₂^2-

Answer 17

peroxide

Question 18

NO₂^-

Answer 18

nitrite

Question 19

Cr₂O₇^2-

Answer 19

dichromate

Question 20

ClO^-

Answer 20

hypochlorite

Question 21

CO₃^2-

Answer 21

carbonate