Common Ions and Their Charges

ammonium

NH₄¹+

hydrogen carbonate (or bicarbonate)

HCO₃¹-

hydrogen sulfate (or bisulfate)

HSO₄¹-

hydroxide

OH¹-

cyanide

CN¹-

carbonate

CO₃²-

acetate

C₂H₃O₂¹-

sulfite

SO₃²-

permanganate

MnO₄¹-

sulfate

SO₄²-

thiocyanate

SCN¹-

chromate

CrO₄²-

nitrite

NO₂¹-

dichromate

Cr₂O₇²-

nitrate

NO₃¹-

oxalate

C₂O₄²-

iodate

IO₃¹-

thiosulfate

S₂O₃²-

bromate

BrO₃¹-

hypochlorite

ClO¹-

phosphite

PO₃³-

chlorite

ClO₂¹-

phosphate

PO₄³-

chlorate

ClO₃¹-

perchlorate

ClO₄¹-