HPO₃²⁻
hydrogen phosphite
HPO₄²⁻
hydrogen phosphate
CO₃²⁻
Carbonate
SO₃²⁻
Sulfite
SO₄²⁻
Sulfate
S₂O₃²⁻
Thiosulfate
SiO₃²⁻
Silicate
C₂²⁻
Carbide
C₂O₄²⁻
Oxalate
CrO₄²⁻
Chromate
Cr₂O₇²⁻
Dichromate
C₄H₄O₆²⁻
Tartrate
MoO₄²⁻
Molybdate
O₂²⁻
Peroxide
S₂²⁻
disulfide
PO₃³⁻
Phosphite
PO₄³⁻
Phosphate
PO₂³⁻
Hypophosphite
AsO₃³⁻
Arsenite
AsO₄³⁻
Arsenate