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ammonium
NH4+
hydroxide
OH⁻
nitrite
NO2−
nitrate
NO₃⁻
carbonate
CO₃²⁻
hydrogen carbonate, or bicarbonate
HCO₃⁻
sulfite
SO₃²⁻
sulfate
SO₄²⁻
hydrogen sulfate, or bisulfate
HSO₄⁻
phosphate
PO₄³⁻
hydrogen phosphate
HPO₄²⁻
dihydrogen phosphate
H₂PO₄⁻
hypochlorite
ClO⁻
chlorite
ClO₂⁻
chlorate
ClO₃⁻
perchlorate
ClO₄⁻
ionic compound
Often a metal and a nonmetal.
molecular compound
coumpounds with nonmetals or nonmetals + metalloids