Common Polyatomic Ions

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Vocabulary flashcards pairing each polyatomic ion formula with its common name.

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32 Terms

1
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NH4⁺

ammonium ion

2
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CN⁻

cyanide ion

3
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CH3CO2⁻ (C2H3O2⁻)

acetate ion

4
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CO3²⁻

carbonate ion

5
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HCO3⁻

bicarbonate (hydrogen carbonate) ion

6
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C2O4²⁻

oxalate ion

7
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NO2⁻

nitrite ion

8
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NO3⁻

nitrate ion

9
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PO4³⁻

phosphate ion

10
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HPO4²⁻

hydrogen phosphate ion

11
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H2PO4⁻

dihydrogen phosphate ion

12
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OH⁻

hydroxide ion

13
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SO3²⁻

sulfite ion

14
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SO4²⁻

sulfate ion

15
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HSO4⁻

hydrogen sulfate (bisulfate) ion

16
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ClO⁻

hypochlorite ion

17
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ClO2⁻

chlorite ion

18
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ClO3⁻

chlorate ion

19
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ClO4⁻

perchlorate ion

20
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BrO⁻

hypobromite ion

21
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BrO2⁻

bromite ion

22
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BrO3⁻

bromate ion

23
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BrO4⁻

perbromate ion

24
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IO⁻

hypoiodite ion

25
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IO2⁻

iodite ion

26
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IO3⁻

iodate ion

27
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IO4⁻

periodate ion

28
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CrO4²⁻

chromate ion

29
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Cr2O7²⁻

dichromate ion

30
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MnO4⁻

permanganate ion

31
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O2²⁻

peroxide ion

32
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SCN⁻

thiocyanate ion