polyatomic ions (beginning of year chem test)

BO₃^3-

borate

B₄O₇^2-

tetraborate

C₂H₃O₂^-

acetate

C₂O₄^2-

oxalate

ClO^-

hypochlorite

ClO₂^-

chlorite

ClO₃^-

chlorate

ClO₄^-

perchlorate

CN-

cyanide

CO₃^2-

carbonate

CrO₄^2-

chromate

Cr₂O₇^2-

dichromate

Fe(CN)₆^3-

ferricyanide

Fe(CN)₆^4-

ferrocyanide

HCO₃^-

hydrogen carbonate

HC₂O₄^-

hydrogen oxalate

HPO₄^2-

hydrogen phosphate

H₂PO₄^-

dihydrogen phosphate

HSO₃^-

hydrogen sulfite

HSO₄^-

hydrogen slfate

H₃O⁺

hydronium

Hg₂²⁺

mercury (i)

MnO₄^-

permanganate

MoO₄^2-

molybdate

N₃^-

azide

NH₂^-

amide

NH₄⁺

ammonium

NO₂^-

nitrite

NO₃^-

nitrate

OH^-

hydroxide

PO₃^3-

phosphite

PO₄^3-

phosphate

P₂O₇^4-

diphosphate

SO₃^2-

sulfite

SO₄^2-

sulfate

S₂O₃^2-

thiosulfate

S₂O₄^2-

dithionite

S₂O₆^2-

dithionate

S₂O₇^2-

disulfate

S₂O₈^2-

peroxydisulfate

SeO₄^2-

selenate

SiO₃^2-

silicate

VO₃^-

vanadate