Ion formulae

ammonium ion

NH4+

caesium ion

Cs+

hydrogen ion

H+

lithium ion

Li+

potassium ion

K+

rubidium ion

Rb+

silver ion

Ag+

sodium ion

Na+

barium ion

Ba, 2+

calcium ion

Ca, 2+

cobalt (II) ion

Co, 2+

copper (II) ion

Cu, 2+

iron (II) ion

Fe, 2+

lead (II) ion

Pb, 2+

magnesium ion

Mg, 2+

manganese (II) ion

Mn, 2+

nickel (II) ion

Ni, 2+

strontium ion

Sr, 2+

zinc ion

Zn, 2+

mercury ion

Hg, 2+

aluminium ion

Al, 3+

chromium (III) ion

Cr, 3+

iron (III) ion

Fe, 3+

bromide ion

Br-

chloride ion

Cl-

cyanide ion

CN-

dihydrogen phosphate ion

H2PO4, -

ethanoate (acetate) ion

CH3COO-

fluoride ion

F-

hydrogencarbonate ion

HCO3, -

hydrogensulfate ion

HSO4, -

hydroxide ion

OH-

iodide ion

I-

nitrate ion

NO3, -

nitrite ion

NO2, -

permanganate ion

MnO4, -

carbonate ion

CO3, 2-

chromate ion

CrO4, 2-

dichromate ion

Cr2O7, 2-

hydrogenphosphate ion

HPO4, 2-

oxalate ion

C2O4, 2-

oxide ion

O, 2-

sulfate ion

SO4, 2-

sulfide ion

S, 2-

sulfite ion

SO3, 2-

nitride ion

N, 3-

phosphate ion

PO4, 3-

phosphide ion

P, 3-