2.2 Naming Ionic Compounds

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    Naming Ionic Compounds

    1. Name the cation (metal or polyatomic cation).

    2. State the metal’s oxidation state as a roman numeral in parenthesis.

        (except Group I/II metals, Al3+, Zn2+, Cd2+, Ag+)

    3. Name the non-metal with an -ide ending (or name the polyatomic anion).

    Polyatomic Ions

    SO42- sulfate
    SO32- sulfite
    NO3- nitrate
    NO2- nitrite
    PO43- phosphate
    CO32- carbonate
    HCO3- bicarbonate
    OH- hydroxide
    MnO4- permanganate
    CrO42- chromate
    Cr2O72- dichromate
    NH4+ ammonium
    CN- cyanide

    ClO- hypochlorite
    ClO2- chlorite
    ClO3- chlorate
    ClO4- perchlorate

    (for Br and I also)