Polyatomic Cations/Anions

Question 0

Hydronium

Answer 0

H3O +

Question 1

Ammonium

Answer 1

NH4 +

Question 2

Hydroxide

Answer 2

OH -

Question 3

Cyanide

Answer 3

CN -

Question 4

Peroxide

Answer 4

O2 -2

Question 5

Carbonate

Answer 5

CO3 -2

Question 6

Oxalate

Answer 6

C2O4 -2

Question 7

Nitrite

Answer 7

NO2 -

Question 8

Nitrate

Answer 8

NO3 -

Question 9

Phosphite

Answer 9

PO3 -3

Question 10

Phosphate

Answer 10

PO4 -3

Question 11

Sulfite

Answer 11

SO3 -2

Question 12

Sulfate

Answer 12

SO4 -2

Question 13

Thiosulfate

Answer 13

S2O3 -2

Question 14

Hypochlorite

Answer 14

ClO -

Question 15

Chlorite

Answer 15

ClO2 -

Question 16

Chlorate

Answer 16

ClO3 -

Question 17

Perchlorate

Answer 17

ClO4 -

Question 18

Acetate

Answer 18

C2H3O2 -
or
CH3COO -

Question 19

Arsenate

Answer 19

AsO4 -3

Question 20

Borate

Answer 20

BO3 -3

Question 21

Silicate

Answer 21

SiO3 -2

Question 22

Permanganate

Answer 22

MnO4 -

Question 23

Chromate

Answer 23

CrO4 -2

Question 24

Dichromate

Answer 24

Cr2O7 -2

Question 25

Formate

Answer 25

CHO2 -

Question 26

Bicarbonate or Hydrogen carbonate

Answer 26

HCO3 -

Question 27

Bisulfite or Hydrogen sulfite

Answer 27

HSO3 -

Question 28

Bisulfate or Hydrogen sulfate

Answer 28

HSO4 -

Question 29

Hydrogen phosphate

Answer 29

HPO4 -2

Question 30

Dihydrogen phosphate

Answer 30

H2PO4 -