common polyatomic and monatomic ions

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name and formula

ammonium

NH4 +1

acetate

CH3COO -1
C2H3OC -1

carbonate

CO3 -2

hydrogen carbonate (bicarbonate)

HCO3 -1

hypochlorite

ClO -1

chlorite

ClO2 -1

chlorate

ClO3 -1

perchlorate

ClO4 -1

permanganate

MnO4 -1

chromate

CrO4 -2

dichromate

Cr2O7 -2

nitrate

NO3 -1

nitrite

NO2 -1

peroxide

O2 -2

oxalate

C2O4 -2

cyanide

CN -1

thiocyanate

SCN -1

phosphate

PO4 -3

monohydrogen phosphate

HPO4 -2

dihydrogen phosphate

H2PO4 -1

sulfate

SO4 -2

hydrogen sulfate (bisulfate)

HSO4 -1

thiosulfate

S2O3 -2

hydrogen sulfide (bisulfide)

HS -1

sulfite

SO3 -2

hydrogen sulfite (bisulfite)

HSO3 -1

hydroxide

OH -1

hydronium

H3O +1

iron

Fe +2
Fe +3

copper

Cu +1
Cu +2

zinc

Zn +2

silver

Ag +1

tin

Sn +2
Sn +4

mercury

Hg2 +2
Hg +2

lead

Pb +2
Pb +4

Iodate

IO3 -2

Cyanate

OCN -1

cupric

Cu+2

cuprous

Cu+1

ferric

Fe+3

ferrous

Fe+2

Stannic

Sn+4

stannous

Sn+2

plumbic

Pb+4

plumbous

Pb+2

argent-

Ag

mercuric

Hg+2

mercurous

Hg2+2

mercury (1) (dimercury)

Hg2+2

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