FORMULAS and NOMENCLATURE NOTES

I. Oxidation numbers

a. monoatomic ions
            1. fixed charge - group I, group II, Zn, Al, Ag, Cd

            2. variable charge - Fe, Cu, Pb, Sn, Co, Ni, Hg, Mn, Cr

        b. polyatomic ions - see list

II. Formulas

        a. cross oxidation numbers and reduce

b. use of parentheses
        c. uncrossing to determine original oxidation number

III. Naming compounds

        a. binary ionic - end in "-ide"

            1. fixed

            2. variable - use Latin names or Roman Numeral system

        b. ternary ionic - use polyatomic ion names

            1. fixed

            2. variable- use Latin names or Roman Numeral system

        c. covalent - use prefixes to tell how many; end in "-idde"
 
        d. acids

    • binary - begin with "hydro-" and end in "-ic acid"
    • ternary
    1. hypo___ous acid
    2. _______ous acid
    3. _______ic acid
    4. per_____ic acid
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