The Polyatomic Ions

Ag, silver, may only have a +1 charge. Cd, cadmium, may only have a +2 charge. Zn, zinc, may only have a +2 charge.

C₂H₃O₂⁻

Acetate

CN⁻

Cyanide

OH⁻

Hydroxide

NO₃⁻

Nitrate

NO₂⁻

Nitrite

MnO₄⁻

Permanganate

H₂PO₄⁻

Dihydrogen Phosphate

HSO₃⁻

Hydrogen Sulfite (bisulfite)

HSO₄⁻

Hydrogen Sulfate (bisulfate)

HCO₃⁻

Hydrogen Carbonate (bicarbonate)

CO₃²⁻

Carbonate

CO₂²⁻

Carbonite

CrO₄²⁻

Chromate

Cr₂O₇²⁻

Dichromate

SO₄²⁻

Sulfate

SO₃²⁻

Sulfite

HPO₄²⁻

Hydrogen Phosphate (Biphosphate)

C₂O₄²⁻

Oxalate

SiO₃²⁻

Silicate

PO₄³⁻

Phosphate

PO₃³⁻

Phosphite

NH₄¹⁺

Ammonium

ClO₄⁻, BrO₄⁻, IO₄⁻

perchlorate, perbromate, periodate

ClO₃⁻, BrO₃⁻, IO₃⁻

chlorate, bromate, iodate

ClO₂⁻, BrO₂⁻, IO₂⁻

chlorite, bromite, iodite

ClO⁻, BrO⁻, IO⁻

hypochlorite, hypobromite, hypoiodite

Au (Gold)

Aurum (Aurous +1 charge, Auric +3 charge)

Cu (Copper)

Cuprum (Cuprous +1 charge, Cupric +2 charge)

Fe (Iron)

Ferrum (Ferrous +2 charge, Ferric +3 charge)

Pb (Lead)

Plumbum (Plumbous +2 charge, Plumbic +4 charge)

Sn (Tin)

Stannum (Stannous +2 charge, Stannic +4 charge)