Polyatomic Ions

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Flashcards covering essential polyatomic ions and their chemical formulas for chemistry honors.

Last updated 4:36 PM on 8/10/26

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40 Terms

1

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Ammonium

NH₄⁺

2

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Acetate

C₂H₃O₂⁻

3

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Arsenate

AsO₄³⁻

4

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Arsenite

AsO₃³⁻

5

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Azide

N₃⁻

6

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Benzoate

C₇H₅O₂⁻

7

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Borate

BO₃³⁻

8

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Bromate

BrO₃⁻

9

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Carbonate

CO₃²⁻

10

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Chlorate

ClO₃⁻

11

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Chlorite

ClO₂⁻

12

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Chromate

CrO₄²⁻

13

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Cyanide

CN⁻

14

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Dichromate

Cr₂O₇²⁻

15

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Dihydrogen Phosphate

H₂PO₄⁻

16

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Dihydrogen Phosphite

H₂PO₃⁻

17

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Hydrogen Carbonate

HCO₃⁻

18

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Hydrogen Phosphate

HPO₄²⁻

19

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Hydrogen Phosphite

HPO₃²⁻

20

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Hydrogen Sulfate

HSO₄⁻

21

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Hydrogen Sulfide

HS⁻

22

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Hydrogen Sulfite

HSO₃⁻

23

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Hydroxide

OH⁻

24

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Hypochlorite

ClO⁻

25

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Iodate

IO₃⁻

26

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Manganate

MnO₄²⁻

27

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Nitrate

NO₃⁻

28

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Nitrite

NO₂⁻

29

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Oxalate

C₂O₄²⁻

30

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Perchlorate

ClO₄⁻

31

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Permanganate

MnO₄⁻

32

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Peroxide

O₂²⁻

33

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Phosphate

PO₄³⁻

34

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Phosphite

PO₃³⁻

35

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Silicate

SiO₃²⁻

36

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Sulfate

SO₄²⁻

37

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Sulfite

SO₃²⁻

38

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Tartrate

C₄H₄O₆²⁻

39

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Thiocyanate

SCN⁻

40

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Thiosulfate

S₂O₃²⁻