AP Polyatomic Ions & Binary Compounds

NH₄⁺

ammonium

H₃O⁺

hydronium

Hg₂²⁺

Mercury I

H₂PO₄^-

dihydrogen phosphate

HCO₃^-

hydrogen carbonate

HSO₃^-

hydrogen sulfite

HSO₄^-

hydrogen sulfate

NO₂^-

nitrite

NO₃^-

nitrate

OH^-

hydroxide

C₂H₃O₂^- or CH₃COO^-

acetate

CN^-

cyanide

CNO^-

cyanate

CNS^-

thiocyanate

O₂^-

superoxide

MnO₄^-

permanganate

ClO^-

hypochlorite

ClO₂^-

chlorite

ClO₃^-

chlorate

ClO₄^-

perchlorate

BrO₃^-

bromate

IO₃^-

iodate

HPO₄^2-

hydrogen phosphate

CO₃^2-

carbonate

SO₃^2-

sulfite

SO₄^2-

sulfate

S₂O₃^2-

thiosulfate

SiO₃^2-

silicate

C₂O₄^2-

oxalate

CrO₄^2-

chromate

Cr₂O₇^2-

dichromate

MoO₄^2-

molybdate

O₂^2-

peroxide

PO₄^3-

phosphate

AsO₄^3-

arsenate

H₂O

water

H₂O₂

hydrogen peroxide

NH₃

ammonia

N₂H₄

hydrazine

C₂H₂

acetylene

PH₃

phosphine

AsH₃

arsine

NO

nitric oxide

N₂O

nitrous oxide

CH₄

methane