Common ions and their charges

Ammonium

NH4+

Copper(I)

Cu+

Hydrogen

H+

Potassium

K+

Silver

Ag+

Sodium

Na+

Acetate

C2H3O2-

Bromide

Br-

Chlorate

ClO3-

Chlorine

Cl-

Fluoride

F-

Hydrogen carbonate

HCO3-

Hydrogen Sulfate

HCI3-

Hydroxide

OH-

Iodide

I-

Nitrate

NO3-

Nitrite

NO2-

Barium

Ba²+

Calcium

Ca²+

Chromium(II)

Cr²+

Copper(II)

Cu²+

Iron(II)

Fe²+

Lead(II)

Pb²+

Magnesium

Mg²+

Mercury(I)

Hg2²+

Nickel(II)

Ni²+

Zinc

Zn²+

Carbonate

CO3²-

Chromate

CrO4²-

Dichromate

Cr2O7²-

Oxide

O²-

Peroxide

O2²-

Sulfate

SO4²-

Sulfide

S²-

Sulfite

SO3²-

Aluminum

Al³+

Chromium(III)

Cr³+

Iron(III)

Fe³+

Phosphate

PO4³-

Lead(IV)

Pb⁴+

Tin(IV)

Sn⁴+