Common Ions & Polyatomic Ions

Question 1

Acetate

Answer 1

C₂H₃O₂^-

Question 2

Carbonate

Answer 2

CO₃^2-

Question 3

Hydrogen carbonate Bicarbonate

Answer 3

HCO₃^-

Question 4

Hydroxide

Answer 4

OH^-

Question 5

Nitrate

Answer 5

NO₃^-

Question 6

Chromate

Answer 6

CrO₄^2-

Question 7

Dichromate

Answer 7

Cr₂O₇^2-

Question 8

Phosphate

Answer 8

PO₄^3-

Question 9

Hydrogen phosphate

Answer 9

HPO₄^2-

Question 10

Dihydrogen phosphate

Answer 10

H₂PO₄^2-

Question 11

Ammonium

Answer 11

NH₄⁺

Question 12

Chlorate

Answer 12

ClO₃^-

Question 13

Permanganate

Answer 13

MnO₄^-

Question 14

Sulfate

Answer 14

SO₄^2-

Question 15

Hydrogen sulfate (bisulfate)

Answer 15

HSO₄^-

Question 16

Cyanide

Answer 16

CN^-

Question 17

Peroxide

Answer 17

O₂^2-

Question 18

Bromite

Answer 18

BrO₂^-

Question 19

Thiocyanate

Answer 19

SCN^-

Question 20

Silver ion

Answer 20

Ag⁺ (Group 1B)

Question 21

Zinc ion

Answer 21

Zn²⁺ (Group 2B)

Question 22

Cadmium ion

Answer 22

Cd²⁺ (Group 2B)