Frank R. Gorga, Ph.D.
  Survey of Chemistry I (CHEM 131)
 

    Selected Polyatomic Ions (commit to memory!)

     

    Acetate

    C2H3O2-

    -1

    Arsenate

    AsO4-3

    -3

    Bicarbonate

    HCO3-

    -1

    Carbonate

    CO3-2

    -2

    Chromate

    CrO4-2

    -2

    Cyanide

    CN-

    -1

    Dichromate

    Cr2O7-2

    -2

    Hydroxide

    OH-

    -1

    Nitrate

    NO3-

    -1

    Nitrite

    NO2-

    -1

    Permanganate

    MnO4-1

    -1

    Phosphate

    PO4-3

    -3

    Sulfate

    SO4-2

    -2
    Ammonium NH4+ +1

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Last updated: 31-Aug-2010