Polyatomic Ions

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Polyatomic Ions flashcards for General Chemistry at Sacred Heart University

Last updated 1:29 AM on 8/29/26
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31 Terms

1
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What is an ion?

An atom or molecule that has an electric charge because it has an unequal number of protons and electrons.

2
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Acetate

CH3COO-, or OAc

3
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Carbonate

CO3²-

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Bicarbonate or hydrogen carbonate

HCO3-

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Cyanide

CN-

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Thiocyanide

SCN-

7
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Hypochlorite

C1O-

8
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Chlorite

C1O2-

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Chlorate

C1O3-

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Perchlorate

C1O4-

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Hypobromite

BrO-

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Bromite

BrO2-

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Bromate

BrO3-

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Perbromate

BrO4-

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Permanganate

MnO4

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Azide

N3-

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Chromate

CrO4²-

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Dichromate

Cr2O7²-

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Ammonium

NH4+

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Nitrite

NO2-

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Nitrate

NO3-

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Hydroxide

OH-

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Peroxide

o2²-

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Phosphate

PO4³-

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Hydrogen Phosphate

HPO4²-

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Dihydrogen phosphate

H2PO4-

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Disulfide

S2²-

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Sulfate

SO4²-

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Hydrogen sulfate or bisulfate

HSO4-

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sulfite

SO3²-

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HSO3-