Polyatomic Ions

sus

ammonium

ammonium

NH₄⁺¹

mercury (I)

Hg₂⁺²

mercury (II)

Hg⁺²

carbonate

CO₃^-2

nitrate

NO₃^-1

phosphate

PO₄^-3

arsenate

AsO₄^-3

sulfate

SO₄^-2

selenate

SeO₄^-2

fluorate

FO₃^-1

chlorate

ClO₃^-1

bromate

BrO₃^-1

iodate

IO₃^-1

chromate

CrO₄^-2

acetate

C₂H₃O₂^-1

oxalate

C₂O₄^-2

permanganate

MnO₄^-1

dichromate

Cr₂O₇^-2

nitrite

NO₂^-1

phosphite

PO₃^-3

sulfite

SO₃^-2

hypochlorite

ClO^-1

chlorite

ClO₂^-1

perchlorate

ClO₄^-1

hypobromite

BrO^-1

bromite

BrO₂^-1

perbromate

BrO₄^-1

hypoiodite

IO^-1

iodite

IO₂^-1

periodate

IO₄^-1