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CHEMISTRY EXAM FORMULA AND RESOURCE PACKET<br />

Common Polyatomic Ions<br />

1- Charge 2- Charge 3- Charge<br />

Formula Name Formula Name Formula Name<br />

H₂PO₄<br />

Dihydrogen<br />

Hydrogen<br />

HPO₄<br />

Phosphate<br />

phosphate PO₃ Phosphite<br />

C₂H₃O₂ Acetate C₂O₄ Oxalate PO₄ Phosphate<br />

HSO₃ Hydrogen<br />

sulfite<br />

SO₃ Sulfite<br />

HSO₄<br />

HCO₃<br />

Hydrogen<br />

SO₄<br />

sulfate<br />

Sulfate<br />

Hydrogen<br />

carbonate<br />

CO₃<br />

Carbonate<br />

NO₂ Nitrite CrO₄ Chromate 1+ Charge<br />

NO₃ Nitrate Cr₂O₇ Dichromate Formula Name<br />

CN Cyanide SiO₃ Silicate NH₄ Ammonium<br />

OH<br />

MnO₄<br />

ClO<br />

Hydroxide<br />

Permanganate<br />

Hypochlorite<br />

S₂O₃ Thiosulfate H₃O Hydronium<br />

ClO₂ Chlorite<br />

ClO₃<br />

Chlorate<br />

ClO₄ Perchlorate<br />

R15

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