APChemSummerMemorization (common ions)

ammonium

NH4+

copper (1) (green)

Cu+

hydronium

H3O+

silver

Ag+

tin (4)

Sn (4+)

lead (4)

Pb(4+)

vanadium (4)

V(4+)

cadmium

Cd(2+)

chromium (2)

Cr(2+)

copper (2) (blue)

Cu(2+)

cobalt (2) (blue)

Co(2+)

iron (2)

Fe(2+)

lead (2)

Pb(2+)

mercury (1)

Hg2(2+)

mercury (2)

Hg(2+)

manganese (2)

Mn(2+)

nickel (2) (green)

Ni(2+)

tin (2)

Sn(2+)

vanadium (2)

V(2+)

zinc

Zn(2+)

cobalt (3) (blue)

Co(3+)

chromium (3)

Cr(3+)

iron (3)

Fe(3+)

nickel (3)

Ni(3+)

vanadium (3)

V(3+)

manganese (7)

Mn(7+)

acetate

Ch3COO-

C2H3O2-

hypobromite

BrO-

bromite

Bro2-

bromate

BrO3-

perbromate

BrO4-

hypochlorite

ClO-

chlorite

ClO2-

chlorate

ClO3-

perchlorate

ClO4-

cyanide

CN-

dihydrogen phosphate

H2PO4-

formate

HCOO-

hydrogen carbonate (bicarbonate)

HCO3-

hydrogen sulfite (bisulfite)

HSO3-

hydrogen sulfate (bisulfate)

HSO4-

bisulfide

HS-

hydroxide

OH-

nitrite

NO2-

nitrate

NO3-

hypoiodite

IO-

iodite

IO2-

iodate

IO3-

periodate

IO4-

permanganate (purple)

MnO4-

thiocynate

SCN-

carbonate

CO3(2-)

chromate (yellow)

CrO4(2-)

dichromate (orange)

Cr2O7(2-)

hydrogen phosphate

HPO4(2-)

oxalate

C2O4(2-)

peroxide

O2(2-)

sulfite

SO3(2-)

sulfate

SO4(2-)

thiosulfate

S2O3(2-)

phosphite

PO3(3-)

phosphate

PO4(3-)

arsenate

AsO4(3-)