Chemical Ions: Names and Formulas for Chemistry Students

Which ion is iron (II)?

Fe2+

Which ion is iron (III)?

Fe3+

Which ion is copper (I)?

Cu+

Which ion is copper (II)?

Cu2+

Which ion is tin (II)?

Sn2+

Which ion is tin (IV)?

Sn4+

Which ion is Ammonium?

NH4+

Which ion is Hydronium?

H3O+

Which ion is Mercury (I)?

Hg22+

Which ion is Hydroxide?

OH-

Which ion is Cyanide?

CN-

Which ion is Peroxide?

O22-

Which ion is Azide?

N3-

Which ion is Acetate?

C2H3O2-

Which ion is Permanganate?

MnO4-

Which ion is Dichromate?

Cr2O72-

Which ion is Carbonate?

CO32-

Which ion is Sulfate?

SO42-

Which ion is Chromate?

CrO42-

Which ion is Dichromate?

Cr2O72-

Which ion is Thiosulfate?

S2O32-

Which ion is Phosphate?

PO43-

Which ion is Nitrate?

NO3-

Which ion is Nitrite?

NO2-

Which ion is Sulfite?

SO32-

Which ion is Perchlorate?

ClO4-

Which ion is Chlorite?

ClO2-

Which ion is Hypochlorite?

ClO-

Which ion is Perbromate?

BrO4-

Which ion is Bromate?

BrO3-

Which ion is Bromite?

BrO2-

Which ion is Hypobromite?

BrO-

Which ion is Periodate?

IO4-

Which ion is Iodate?

IO3-

Which ion is Iodite?

IO2-

Which ion is Hypoiodite?

IO-

Which ion is Bisulfate (hydrogen sulfate)?

HSO4-

Which ion is Bisulfite (hydrogen sulfite)?

HSO3-

Which ion is Bicarbonate?

HCO3-

Which ion is Hydrogen phosphate?

HPO42-

Which ion is Dihydrogen phosphate?

H2PO4-