Table E - Polyatomic Ions

Question 1

Hydronium

Answer 1

H₃O⁺

Question 2

Mercury (I)

Answer 2

Hg₂²⁺

Question 3

Ammonium

Answer 3

NH₄⁺

Question 4

Acetate

Answer 4

C₂H₃O₂^-

Question 5

Cyanide

Answer 5

CN^-

Question 6

Carbonate

Answer 6

CO₃^2-

Question 7

Hydrogen Carbonate

Answer 7

HCO₃^-

Question 8

Oxalate

Answer 8

C₂O₄^2-

Question 9

Hypochlorite

Answer 9

ClO^-

Question 10

Chlorite

Answer 10

ClO₂^-

Question 11

Chlorate

Answer 11

ClO₃^-

Question 12

Perchlorate

Answer 12

ClO₄^-

Question 13

Chromate

Answer 13

CrO₄^2-

Question 14

Dichromate

Answer 14

Cr₂O₇^2-

Question 15

Permanganate

Answer 15

MnO₄^-

Question 16

Nitrite

Answer 16

NO₂^-

Question 17

Nitrate

Answer 17

NO₃^-

Question 18

Peroxide

Answer 18

O₂^2-

Question 19

Hydroxide

Answer 19

OH^-

Question 20

Phosphate

Answer 20

PO₄^3-

Question 21

Thiocyanate

Answer 21

SCN^-

Question 22

Sulfite

Answer 22

SO₃^2-

Question 23

Sulfate

Answer 23

SO₄^2-

Question 24

Hydrogen Sulfate

Answer 24

HSO₄^-

Question 25

Thiosulfate

Answer 25

S₂O₃^2-