Common Polyatomic Ions List

Question 1

H^2PO^4-

Answer 1

dihydrogen phosphate 1-

Question 2

H^2PO^3-

Answer 2

dihydrogen phosphite 1-

Question 3

HCO^3-

Answer 3

hydrogen carbonate 1-

Question 4

HSO^4-

Answer 4

hydrogen sulfate 1-

Question 5

BrO^3-

Answer 5

bromate 1-

Question 6

CH^3COO-

Answer 6

acetate 1-

Question 7

C1O-

Answer 7

hypochlorite 1-

Question 8

C10^2-

Answer 8

chlorite 1-

Question 9

C1O^3-

Answer 9

chlorate 1-

Question 10

C1O^4-

Answer 10

perchlorate 1-

Question 11

CN-

Answer 11

cyanide 1-

Question 12

I0^3-

Answer 12

iodate 1-

Question 13

OH-

Answer 13

hydroxide 1-

Question 14

NO^3-

Answer 14

nitrate 1-

Question 15

NO^2-

Answer 15

nitrite 1-

Question 16

MnO^4-

Answer 16

permanganate 1-

Question 17

SCN-

Answer 17

thiocyanate 1-

Question 18

HPO_4^2-

Answer 18

hydrogen phosphate 2-

Question 19

HPO_3^2-

Answer 19

hydrogen phosphite 2-

Question 20

CO_3^2-

Answer 20

carbonate 2-

Question 21

SO_4^2-

Answer 21

sulfate 2-

Question 22

SO_3^2-

Answer 22

sulfite 2-

Question 23

C_2O_4^2-

Answer 23

oxalate 2-

Question 24

CrO_4^2-

Answer 24

chromate 2-

Question 25

Cr_2O_3^2-

Answer 25

dichromate 2-

Question 26

S_2O_3^2-

Answer 26

thiosulfate 2-

Question 27

SiO_3^2-

Answer 27

silicate 2-

Question 28

PO_4^3-

Answer 28

phosphate 3-

Question 29

PO_3^3-

Answer 29

phosphite 3-

Question 30

BO_3^3-

Answer 30

borate 3-

Question 31

NH_4+

Answer 31

ammonia 1+

Question 32

H_3O+

Answer 32

hydronium 1+