Table E- Selected Polyatomic Ions

Question 1

r

Acetate

Answer 1

C₂H₃O₂^-

CH₃COO^-

Question 2

r

Ammonium

Answer 2

NH₄⁺

Question 3

C₂H₃O₂^-

CH₃COO^-

Answer 3

Acetate

Question 4

C₂O₄^2-

Answer 4

Oxalate

Question 5

r

Carbonate

Answer 5

CO₃^2-

Question 6

r

Chlorate

Answer 6

ClO₃^-

Question 7

r

Chlorite

Answer 7

ClO₂^-

Question 8

r

Chromate

Answer 8

CrO₄^2-

Question 9

ClO^-

Answer 9

Hypochlorite

Question 10

ClO₂^-

Answer 10

Chlorite

Question 11

ClO₃^-

Answer 11

Chlorate

Question 12

ClO₄^-

Answer 12

Perchlorate

Question 13

CN^-

Answer 13

Cyanide

Question 14

CO₃^2-

Answer 14

Carbonate

Question 15

Cr₂O₇^2-

Answer 15

Dichromate

Question 16

CrO₄^2-

Answer 16

Chromate

Question 17

r

Cyanide

Answer 17

CN^-

Question 18

r

Dichromate

Answer 18

Cr₂O₇^2-

Question 19

H₃O⁺

Answer 19

Hydronium

Question 20

HCO₃^-

Answer 20

Hydrogen Carbonate

Question 21

Hg₂²⁺

Answer 21

Mercury (I)

Question 22

HSO₄^-

Answer 22

Hydrogen Sulfate

Question 23

r

Hydrogen Carbonate

Answer 23

HCO₃^-

Question 24

r

Hydrogen Sulfate

Answer 24

HSO₄^-

Question 25

# r Hydronium

Answer 25

H₃O⁺

Question 26

# r Hydroxide

Answer 26

OH^-

Question 27

# r Hypochlorite

Answer 27

ClO^-

Question 28

# r Mercury (I)

Answer 28

Hg₂²⁺

Question 29

MnO₄^-

Answer 29

Permanganate

Question 30

NH₄⁺

Answer 30

Ammonium

Question 31

# r Nitrate

Answer 31

NO₃^-

Question 32

# r Nitrite

Answer 32

NO₂^-

Question 33

NO₂^-

Answer 33

Nitrite

Question 34

NO₃^-

Answer 34

Nitrate

Question 35

O₂^2-

Answer 35

Peroxide

Question 36

OH^-

Answer 36

Hydroxide

Question 37

# r Oxalate

Answer 37

C₂O₄^2-

Question 38

# r Perchlorate

Answer 38

ClO₄^-

Question 39

# r Permanganate

Answer 39

MnO₄^-

Question 40

# r Peroxide

Answer 40

O₂^2-

Question 41

# r Phosphate

Answer 41

PO₄^3-

Question 42

PO₄^3-

Answer 42

Phosphate

Question 43

S₂O₃^2-

Answer 43

Thiosulfate

Question 44

SCN^-

Answer 44

Thiocyanate

Question 45

SO₃^2-

Answer 45

Sulfite

Question 46

SO₄^2-

Answer 46

Sulfate

Question 47

# r Sulfate

Answer 47

SO₄^2-

Question 48

# r Sulfite

Answer 48

SO₃^2-

Question 49

# r Thiocyanate

Answer 49

SCN^-

Question 50

# r Thiosulfate

Answer 50

S₂O₃^2-