Chemistry - Formulae of Ions (Polyatomic Ions)

Hydroxide Ion

OH-

Chlorate Ion

ClO(3)-

Perchlorate Ion

ClO(4)-

Chromate Ion

CrO(4)2-

Sulphite Ion

SO(3)2-

Carbonate Ion

CO(3)2-

Phosphate Ion

PO(4)3-

Dichromate Ion

Cr(2)O(7)2-

Chlorite Ion

ClO(2)-

Ammonium Ion

NH(4)+

Acetate Ion

C(2)H(3)O(2)-

Silicate Ion

SiO(4)4-

Permanganate Ion

MnO(4)-

Dihydrogen Phosphate Ion

H(2)PO(4)-

Hydrogen Sulphate Ion

HSO(4)-

Cyanide Ion

CN-

Hydrogen Carbonate Ion

HCO(3)-

Nitrite Ion

NO(2)-

Nitrate Ion

NO(3)-

Sulphate Ion

SO(4)2-