Polyatomic Ions

Question 1

C₂H₃O₂- or CH₃COO-

Answer 1

Acetate (charge -1)

Question 2

NH₄+

Answer 2

Ammonium (charge +1)

Question 3

BrO₃-

Answer 3

Bromate

Question 4

ClO₃-

Answer 4

Chlorate
(Charge -1)

Question 5

ClO₂-

Answer 5

Chlorite
(Charge -1)

Question 6

CN-

Answer 6

Cyanide (charge -1)

Question 7

HCO₃-

Answer 7

Hydrogen Carbonate or Bicarbonate (charge -1)

Question 8

OH-

Answer 8

Hydroxide (charge -1)

Question 9

ClO-

Answer 9

Hypochlorite
(Charge -1)

Question 10

IO₃-

Answer 10

Iodate
(Charge -1)

Question 11

NO₃-

Answer 11

Nitrate
(Charge -1)

Question 12

NO₂-

Answer 12

Nitrite
(Charge -1)

Question 13

MnO₄-

Answer 13

Permanganate
(Charge -1)

Question 14

ClO₄-

Answer 14

Perchlorate Charge -1

Question 15

SCN-

Answer 15

Thiocyanate
Charge -1

Question 16

CO₃ ⁻²

Answer 16

Carbonate
Charge -2

Question 17

CrO₄ ⁻²

Answer 17

Chromate
Charge -2

Question 18

Cr₂O₇ ⁻²

Answer 18

Dichromate
Charge -2

Question 19

C₂0₄ ⁻²

Answer 19

Oxalate
Charge -2

Question 20

O₂ ⁻²

Answer 20

Peroxide
Charge -2

Question 21

SO₄ ⁻²

Answer 21

Sulfate
Charge -2

Question 22

SO₃ ⁻²

Answer 22

Sulfite
Charge -2

Question 23

PO₄ ⁻³

Answer 23

Phosphate
Charge -3

Question 24

PO ₃ ⁻³

Answer 24

Phosphite
Charge -3

Question 25

AsO₄ ⁻³

Answer 25

Arsenate
Charge -3

Question 26

Ions containing oxygen

Answer 26

End in ate or ite

Question 27

Ate

Answer 27

Most common form

Question 28

Ite

Answer 28

Used for form with same charge but 1 less oxygen

Question 29

PER