Common Polyatomic ions

Question 1

NH4 +

Answer 1

ammonium

Question 2

CN -

Answer 2

cyanide

Question 3

CNO -

Answer 3

cyanate

Question 4

HCO3 -

Answer 4

bicarbonate/hydrogen carbonate

Question 5

HSO3 -

Answer 5

bisulfite/hydrogen sulfite

Question 6

HSO4 -

Answer 6

bisulfate/hydrogen sulfate

Question 7

NO2 -

Answer 7

nitrite

Question 8

NO3 -

Answer 8

nitrate

Question 9

OH -

Answer 9

hydroxide

Question 10

C2H3O2 -

Answer 10

acetate

Question 11

MnO4 -

Answer 11

permanganate

Question 12

ClO -

Answer 12

hypochlorite

Question 13

ClO2 -

Answer 13

chlorite

Question 14

ClO3 -

Answer 14

chlorate

Question 15

ClO4 -

Answer 15

perchlorate

Question 16

BrO -

Answer 16

hypobromite

Question 17

BrO2 -

Answer 17

bromite

Question 18

BrO3 -

Answer 18

bromate

Question 19

BrO4 -

Answer 19

perbromate

Question 20

IO -

Answer 20

hypoiodite

Question 21

IO2 -

Answer 21

iodite

Question 22

IO3 -

Answer 22

iodate

Question 23

IO4 -

Answer 23

periodate

Question 24

CO3 2-

Answer 24

carbonate

Question 25

O2 2-

Answer 25

peroxide

Question 26

SO3 2-

Answer 26

sulfite

Question 27

SO4 2-

Answer 27

sulfate

Question 28

S2O3 -2

Answer 28

thiosulfate

Question 29

SiO3 2-

Answer 29

silicate

Question 30

C2O4 2-

Answer 30

oxalate

Question 31

CrO4 -2

Answer 31

chromate

Question 32

Cr2O7 2-

Answer 32

dichromate

Question 33

PO3 3-

Answer 33

phosphite

Question 34

PO4 3-

Answer 34

Phosphate