IB Chem Polyatomic Ions W/ Charges

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IB Chemistry (HL)

Ions

Last updated 6:52 PM on 8/25/26

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45 Terms

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Ammonium

NH₄⁺

2

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Acetate

C₂H₃O₂⁻ (also written CH₃COO⁻)

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Cyanide

CN⁻

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Carbonate

CO₃²⁻

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Hydrogen carbonate (bicarbonate)

HCO₃⁻

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Oxalate

C₂O₄²⁻

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Hypochlorite

ClO⁻

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Chlorite

ClO₂⁻

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Chlorate

ClO₃⁻

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Perchlorate

ClO₄⁻

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Thiosulfate

S₂O₃²⁻

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Hydrogen phosphate

HPO₄²⁻

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Dihydrogen phosphate

H₂PO₄⁻

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Chromate

CrO₄²⁻

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Dichromate

Cr₂O₇²⁻

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Permanganate

MnO₄⁻

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Manganate

MnO₄²⁻

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Nitrite

NO₂⁻

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Nitrate

NO₃⁻

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Hydroxide

OH⁻

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Phosphate

PO₄³⁻

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Thiocyanate

SCN⁻

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Sulfite

SO₃²⁻

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Sulfate

SO₄²⁻

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Hydrogen sulfate (bisulfate)

HSO₄⁻

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Peroxide

O₂²⁻

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Phosphite

PO₃³⁻

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Copper(I)

Cu⁺

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Copper(II)

Cu²⁺

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Iron(II)

Fe²⁺

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Iron(III)

Fe³⁺

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Tin(II)

Sn²⁺

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Tin(IV)

Sn⁴⁺

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Lead(II)

Pb²⁺

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Lead(IV)

Pb⁴⁺

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Mercury(I)

Hg₂²⁺

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Mercury(II)

Hg²⁺

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Chromium(II)

Cr²⁺

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Chromium(III)

Cr³⁺

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Manganese(II)

Mn²⁺

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Manganese(III)

Mn³⁺

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Cobalt(II)

Co²⁺

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Cobalt(III)

Co³⁺

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Zinc

Zn²⁺

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Silver

Ag⁺