Polyatomic Ions

Lake Forest College Chem-115:

Hydroxide, neg 1

Hydroxide, neg 1

Acetate, neg 1

Nitrite, neg 1

Nitrate, neg 1

Permanganate, neg 1

Cyanide, neg 1

Hydrogen Carbonate/Bicarbonate, neg 1

Perchlorate, neg 1

Chlorite, neg 1

Chlorate, neg 1

Hypochlorite, neg 1

Carbonate, neg 2

Sulfate, neg 2

Sulfite, neg 2

Thiosulfate, neg 3

S2O3 -3

Peroxide, neg 2

Chromate, neg 2

Dichromate, neg 2

Phosphate, neg 3

Borate, neg 3

Arsenate, neg 3

Hypo

Ide + 1, usually 1

Ide

Lowest oxygen, typically 0

Ite

Hypo + 1, typically 2

Peri

Ate + 1, typically 4

Ammonium

NH4 +1

Ate

Most common oxygen, typically 3 (except sulfate and phosphate)