Common Polyatomic Ions Name(s) Formula Name(s) Formula

Common Polyatomic Ions Name(s) Formula Name(s) Formula ammonium NH4 + acetate CH3COO-C2H3O2-bromate BrO3-carbonate CO3 2-chlorate ClO3-chlorite ClO2...

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Common Polyatomic Ions Name(s) Formula NH4+

Name(s)

ammonium

iodate

IO3-

acetate

CH3COOC2H3O2-

nitrate

NO3-

nitrite

bromate

BrO3-

NO2-

oxalate

carbonate

CO32-

C2O42-

perchlorate

chlorate

ClO3-

ClO4-

periodate

chlorite

ClO2-

IO4-

permanganate

MnO4-

peroxide

O22-

phosphate

PO43-

phosphite

PO33-

silicate

SiO44-

CrO42-

chromate

CN-

cyanide

Cr2O72-

dichromate hydrogen carbonate bicarbonate

HCO3-

hydrogen sulfate bisulfate

HSO4-

sulfate

Formula

SO42-

sulfite

SO32-

hydrogen phosphate biphosphate

HPO42-

thiocyanate

SCN-

hydroxide

OH-

thiosulfate

S2O32-

hypochlorite

ClO-

Other Ions copper (I) copper (II) iron (II) iron (III) lead (II) lead (IV) mercury (I) mercury (II) tin (II) tin (IV)

cuprous cupric ferrous ferric plumbous plumbic mercurous mercuric stannous stannic

Cu+ Cu2+ Fe2+ Fe3+ Pb2+ Pb4+ Hg22+ Hg2+ Sn2+ Sn4+