Arkansas State University
Department of Chemistry
and Physics
Cation/ Anion List
Worksheet for naming ions

Students enrolled in Dr. Draganjac's Introduction to Chemistry (CHEM1003), General Chemistry I (CHEM1013) and General Chemistry II (CHEM1023) classes are responsible for learning the names and formulae for the common acids and common reagents and for learning the names, formulae and the charges for the common cations and anions listed below:

Common Cations: (ions grouped by charge)
Name Formula Other name(s)
Aluminum Al+3
Ammonium NH4+
Barium Ba+2
Calcium Ca+2
Chromium(II) Cr+2 Chromous
Chromium(III) Cr+3 Chromic
Copper(I) Cu+ Cuprous
Copper(II) Cu+2 Cupric
Iron(II) Fe+2 Ferrous
Iron(III) Fe+3 Ferric
Hydrogen H+
Hydronium H3O+
Lead(II) Pb+2
Lithium Li+
Magnesium Mg+2
Manganese(II) Mn+2 Manganous
Manganese(III) Mn+3 Manganic
Mercury(I) Hg2+2 Mercurous
Mercury(II) Hg+2 Mercuric
Nitronium NO2+
Potassium K+
Silver Ag+
Sodium Na+
Strontium Sr+2
Tin(II) Sn+2 Stannous
Tin(IV) Sn+4 Stannic
Zinc Zn+2
Common Anions: (ions grouped by charge)  (anions grouped by periodic position)
Simple ions:
Hydride H- Oxide O2-
Fluoride F- Sulfide S2-
Chloride Cl- Nitride N3-
Bromide Br-
Iodide I-
Arsenate AsO43- Phosphate PO43-
Arsenite AsO33- Hydrogen phosphate HPO42-
Dihydrogen phosphate H2PO4-
Sulfate SO42- Nitrate NO3-
Hydrogen sulfate HSO4- Nitrite NO2-
Thiosulfate S2O32-
Sulfite SO32-
Perchlorate ClO4- Iodate IO3-
Chlorate ClO3- Bromate BrO3-
Chlorite ClO2-
Hypochlorite OCl- Hypobromite OBr-
Carbonate CO32- Chromate CrO42-
Hydrogen carbonate
or Bicarbonate
HCO3- Dichromate Cr2O72-
Anions from Organic Acids:
Acetate CH3COO- formate HCOO-
Cyanide CN- Amide NH2-
Cyanate OCN- Peroxide O22-
Thiocyanate SCN- Oxalate C2O42-
Hydroxide OH- Permanganate MnO4-

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