Common Polyatomic Ions

Question 1

Ammonium

Answer 1

NH4+

Question 2

Silver

Answer 2

Ag+

Question 3

Zinc

Answer 3

Zn+2

Question 4

Cadmium

Answer 4

Cd+2

Question 5

Hydronium

Answer 5

H3O+

Question 6

Nitrate

Answer 6

NO3-

Question 7

Nitrite

Answer 7

NO2-

Question 8

Hydroxide

Answer 8

OH-

Question 9

Cyanide

Answer 9

CN-

Question 10

Cyanate

Answer 10

OCN-

Question 11

Thiocyanate

Answer 11

SCN-

Question 12

Perchlorate

Answer 12

ClO4-

Question 13

Chlorate

Answer 13

ClO3-

Question 14

Chlorite

Answer 14

ClO2-

Question 15

Hypochlorite

Answer 15

ClO-

Question 16

Perbromate

Answer 16

BrO4-

Question 17

Bromate

Answer 17

BrO3-

Question 18

Bromite

Answer 18

BrO2-

Question 19

Hypobromite

Answer 19

BrO-

Question 20

Periodate

Answer 20

IO4-

Question 21

Iodate

Answer 21

IO3-

Question 22

Iodite

Answer 22

IO2-

Question 23

Hypoiodite

Answer 23

IO-

Question 24

Acetate

Answer 24

C2H3O2-

Question 25

Permanganate

Answer 25

MnO4-

Question 26

Hydrogen Sulfate

Answer 26

HSO4-

Question 27

Hydrogen Sulfite

Answer 27

HSO3-

Question 28

Hydrogen Carbonate

Answer 28

HCO3-

Question 29

Dihydrogen Phosphate

Answer 29

H2PO4-

Question 30

Sulfate

Answer 30

SO4-2

Question 31

Sulfite

Answer 31

SO3-2

Question 32

Carbonate

Answer 32

CO3-2

Question 33

Chromate

Answer 33

CrO4-2

Question 34

Dichromate

Answer 34

Cr2O7-2

Question 35

Peroxide

Answer 35

O2-2

Question 36

Oxalate

Answer 36

C2O4-2

Question 37

Thiosulfate

Answer 37

S2O3-2

Question 38

Hydrogen Phosphate

Answer 38

HPO4-2

Question 39

Phosphate

Answer 39

PO4-3

Question 40

Phosphite

Answer 40

PO3-3

Question 41

Borate

Answer 41

BO3-3

Question 42

Arsenate

Answer 42

ArO4-3