POLYATOMIC IONS
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Keep in mind that this is not a complete list of polyatomic ions.
NITRATE
NO3-1
NITRITE
NO2-1
CHROMATE
CrO4-2
DICHROMATE
Cr2O7-2
CYANIDE
CN-1
PERMANGANATE
MnO4-1
HYDROXIDE
OH-1
PEROXIDE
O2-2
AMIDE
NH-2
CARBONATE
CO3-2
BICARBONATE
(HYDROGEN CARBONATE)
HCO3-1
SULFATE
SO4-2
SULFITE
SO3-2
BISULFATE
(HYDROGEN SULFATE)
HSO4-1
BISULFITE
(HYDROGEN SULFITE)
HSO3-1
OXALATE
C2O4-2
BIOXALATE
(HYDROGEN OXALATE)
HC2O4-1
PHOSPHATE
PO4-3
PHOSPHITE
PO3-3
HYDROGEN PHOSPHATE
HPO4-2
DIHYDROGEN PHOSPHATE
H2PO4-1
THIOSULFATE
S2O3-2
ARSENATE
AsO4-3
SELENATE
SeO4-2
SILICATE
SiO3-2
PERCHLORATE
ClO4-1
CHLORATE
ClO3-1
CHLORITE
ClO2-1
HYPOCHLORITE
CLO-1
PERIODATE
IO4-1
IODATE
IO3-1
HYPOIODITE
IO-1
BROMATE
BrO3-1
HYPOBROMITE
BrO-1
BORATE
BO3-3
TETRABORATE
B4O7-2
ACETATE
C2H302 –1
(may also be written as CH3COO)
AMMONIUM
NH4+1