AP Chemistry Polyatomic Ions

(To be updated throughout the year)

Aluminum

Al3+

Ammonium

NH4+

Barium

Ba2+

Calcium

Ca2+

Copper (1)

Cu+

Copper (2)

Cu2+

Iron (2)

Fe2+

Iron (3)

Fe3+

Hydrogen

H+

Hydronium

H3O+

Lead (2)

Pb2+

Lead (4)

Pb4+

Magnesium

Mg2+

Manganese (2)

Mn2+

Manganese (3)

Mn3+

Mercury (1)

Hg22+

Mercury (2)

Hg2+

Nickel (2)

Ni2+

Nickel (3)

Ni3+

Potassium

K+

Silver

Ag+

Sodium

Na+

Gold (1)

Au+

Gold (3)

Au3+

Strontium

Sr2+

Tin (2)

Sn2+

Tin (4)

Sn4+

Zinc

Zn2+

Acetate

C2H3O2-

Bromide

Br-

Bicarbonate & Hydrogen Carbonate

HCO3-

Bisulfate & Hydrogen Sulfate

HSO4-

Bromate

BrO3-

Bromite

BrO2-

Carbonate

CO32-

Chlorate

ClO3-

Chlorite

ClO2-

Chloride

Cl-

Chromate

CrO42-

Cyanide

Cn-

Dichromate

Cr2O72-

Fluoride

F-

Hydroxide

OH-

Hypobromite

BrO-

Oxalate

C2O42-

Hypochlorite

ClO-

Hypoiodite

IO-

Iodate

IO3-

Iodite

IO2-

Iodide

I-

Nitrate

NO3-

Nitrite

NO2-

Oxide

O2-

Permanganate

MnO4-

Perbromate

BrO4-

Periodate

IO4-

Perchlorate

ClO4-

Peroxide

O22-

Phosphate

PO43-

Phosphite

PO33-

Sulfate

SO42-

Sulfite

SO32-

Thiosulfate

S2O32-

Thiocyanate

SCN-

Sulfide

S2-