Pre-AP Polyatomic Ions

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Hypochlorite

ClO¹⁻

Chlorite

ClO₂¹⁻

Chlorate

ClO₃¹⁻

Perchlorate

ClO₄¹⁻

Nitrite

NO₂¹⁻

Nitrate

NO₃¹⁻

Amide

NH₂¹⁻

Ammonium

NH₄¹⁺

Acetate

C₂H₃O₂¹⁻

Carbonate

CO₃²⁻

Bicarbonate (Hydrogen Carbonate)

HCO₃¹⁻

Cyanide

CN¹⁻

Oxalate

C₂O₄²⁻

Formate

CHOO¹⁻ or CHO₂¹⁻

Silicate

SiO₃²⁻

Borate

BO₃³⁻

Sulfite

SO₃²⁻

Bisulfite (Hydrogen Sulfite)

HSO₃¹⁻

Sulfate

SO₄²⁻

Bisulfate (Hydrogen Sulfate)

HSO₄¹⁻

Thiosulfate

S₂O₃²⁻

Thiocyanate

SCN¹⁻

Phosphite

PO₃³⁻

Phosphate

PO₄³⁻

Hydrogen Phosphate

HPO₄²⁻

Dihydrogen Phosphate

H₂PO₄¹⁻

Chromate

CrO₄²⁻

Dichromate

Cr₂O₇²

Permanganate

MnO₄¹⁻

Peroxide

O₂²⁻

Hydroxide

OH¹⁻

Hydronium

H₃O¹⁺

Cuprous

Cu¹⁺

Cupric

Cu²⁺

Ferrous

Fe²⁺

Ferric

Fe³⁺

Plumbous

Pb²⁺

Plumbic

Pb⁴⁺

Stannous

Sn²⁺

Stannic

Sn⁴⁺

Nickelous

Ni²⁺

Nickelic

Ni³⁺

Mercurous

Hg₂²⁺

Mercuric

Hg²⁺

Chromous

Cr²⁺

Chromic

Cr³⁺

Manganous

Mn²⁺

Manganic

Mn³⁺

Cobaltous

Co²⁺

Cobaltic

Co³⁺

Silver Ion (Argentous)

Ag¹⁺

Zinc Ion

Zn²⁺

Cadmium Ion

Cd²⁺

Scandium Ion

Sc³⁺

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