CHEM nomenclature

COMMON ANIONS

  • CO₃²⁻ — carbonate

  • NO₃⁻ — nitrate

  • NO₂⁻ — nitrite

  • PO₄³⁻ — phosphate

  • PO₃³⁻ — phosphite

  • SO₄²⁻ — sulfate

  • SO₃²⁻ — sulfite

  • S₂O₃²⁻ — thiosulfate

  • ClO₄⁻ — perchlorate

  • ClO₃⁻ — chlorate

  • ClO₂⁻ — chlorite

  • ClO⁻ — hypochlorite

  • C₂H₃O₂⁻ — acetate

  • C₂O₄²⁻ — oxalate

  • COOH⁻ — formate

  • OH⁻ — hydroxide

  • MnO₄⁻ — permanganate

  • CrO₄²⁻ — chromate

  • Cr₂O₇²⁻ — dichromate

  • O₂²⁻ — peroxide

  • CN⁻ — cyanide

  • CNO⁻ — cyanate

  • SCN⁻ — thiocyanate (thiocyanide)

  • HCO₃⁻ — bicarbonate

  • HSO₄⁻ — bisulfate

  • HSO₃⁻ — bisulfite

  • H₂PO₄⁻ — dihydrogen phosphate

  • HPO₄²⁻ — hydrogen phosphate

COMMON CATIONS

  • NH₄⁺ — ammonium

  • Al³⁺ — aluminum

  • Zn²⁺ — zinc

  • Cd²⁺ — cadmium

  • Ag⁺ — silver

MULTIPLE OXIDATION STATE CATIONS

  • Cu⁺ — copper (I) / cuprous

  • Cu²⁺ — copper (II) / cupric

  • Hg₂²⁺ — mercury (I) / mercurous

  • Hg²⁺ — mercury (II) / mercuric

  • Au⁺ — gold (I) / aurous

  • Au³⁺ — gold (III) / auric

  • Cr²⁺ — chromium (II) / chromous

  • Cr³⁺ — chromium (III) / chromic

  • Mn²⁺ — manganese (II) / manganous

  • Mn³⁺ — manganese (III) / manganic

  • Fe²⁺ — iron (II) / ferrous

  • Fe³⁺ — iron (III) / ferric

  • Co²⁺ — cobalt (II) / cobaltous

  • Co³⁺ — cobalt (III) / cobaltic

  • Ni²⁺ — nickel (II) / nickelous

  • Ni³⁺ — nickel (III) / nickelic

  • Sn²⁺ — tin (II) / stannous

  • Sn⁴⁺ — tin (IV) / stannic

  • Pb²⁺ — lead (II) / plumbous

  • Pb⁴⁺ — lead (IV) / plumbic

  • Tl⁺ — thallium (I)

  • Tl³⁺ — thallium (III)

BINARY ACIDS

  • HF — hydrofluoric acid

  • HCl — hydrochloric acid

  • HBr — hydrobromic acid

  • HI — hydroiodic acid

  • H₂S — hydrosulfuric acid

TERNARY ACIDS

  • H₂CO₃ — carbonic acid

  • HNO₃ — nitric acid

  • HNO₂ — nitrous acid

  • H₃PO₄ — phosphoric acid

  • H₃PO₃ — phosphorous acid

  • H₂SO₄ — sulfuric acid

  • H₂SO₃ — sulfurous acid

  • HClO₄ — perchloric acid

  • HClO₃ — chloric acid

  • HClO₂ — chlorous acid

  • HClO — hypochlorous acid

  • HC₂H₃O₂ — acetic acid

  • HCOOH — formic acid

  • H₂C₂O₄ — oxalic acid

ADDITIONAL ACIDS

  • HCN — hydrocyanic acid

ALKANES

  • CH₄ — methane

  • C₂H₆ — ethane

  • C₃H₈ — propane

  • C₄H₁₀ — butane

  • C₅H₁₂ — pentane

  • C₆H₁₄ — hexane

  • C₇H₁₆ — heptane

  • C₈H₁₈ — octane

  • C₉H₂₀ — nonane

  • C₁₀H₂₂ — decane

ALKENES

  • C₂H₄ — ethene

ALKYNES

  • C₂H₂ — ethyne