Acetate

CH3COO

Valency: -1

Amide

NH2

Valency: -1

Azide

N3

Valency: -1

Benzoate

C6H5COO

Valency: -1

Bromate

BrO3

Valency: -1

Chlorate

ClO3

Valency: -1

Chlorite

ClO2

Valency: -1

Cyanate

OCN

Valency: -1

cyanide

CN

Valency: -1

Dihydrogen phosphate

H2PO4

Valency: -1

Formate

HCOO

Valency: -1

Hydrogen carbonate

(aka bicarbonate)

HCO3

Valency: -1

Hydrogen sulfate

(bisulfate)

HSO4

Valency: -1

Hydrogen sulfide

(aka bisulfide or hydrosulfide)

HS

Valency: -1

Hydroxide

(called hydroxyl when aqueous)

OH

Valency: -1

Hypochlorite

ClO

Valency: -1

iodate

IO3

Valency: -1

nitrate

NO3

Valency: -1

Nitrite

NO2

Valency: -1

perchlorate

ClO4

Valency: -1

permanganate

MnO4

Valency: -1

thiocyanate

(aka thiocyanato)

SCN

Valency: -1

triiodide

I3

Valency: -1

vanadate

VO3

Valency: -1

Carbide

C2

Valency: -2

Carbonate

CO3

Valency: -2

Chromate

CrO4

Valency: -2

dichromate

Cr2O7

Valency: -2

Imide

NH

Valency: -2

manganate

MNO4

Valency: -2

matasilicate

SiO3

Valency: -2

monohydrogen phosphate

HPO4

Valency: -2

oxalate

C2O4

Valency: -2

peroxide

O2

Valency: -2

peroxydisulfate

S2O8

Valency: -2

phthalate

C8H4O4

Valency: -2

polysulfide

Sx (x number of S)

Valency: -2

selenate

SeO4

Valency: -2

sulfate

SO4

Valency: -2

sulfite

SO3

Valency: -2

tartrate

C4H4O6

Valency: -2

tellurate

TeO4

Valency: -2

tetraborate

B4O7

Valency: -2

thiosulfate

S2O3

Valency: -2

tungstate

WO4

Valency: -2

zincate

ZnO2

Valency: -2

aluminate

AlO3

Valency: -3

arsenate

AsO4

Valency: -3

borate

BO3

Valency: -3

citrate

C6H5O7

Valency: -3

phosphate

PO4

Valency: -3

orthosilicate

SiO4

Valency: -4

pyrophosphate

P2O7

Valency: -4

tripolyphosphate

P3O10

Valency: -5

Ammonium

NH4

Valency: +1

Hydronium

H3O

Valency: +1