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    • #12 - Naming Transition Metal Compounds

    Remember that the middle strip of the periodic table are the transition metals?


    The green section in the middle are the transition metals

    They, of course, are metals and can bond with non-metals, but they�re different. These metals have different electron structures and for that reason they can have different charges.

    For example, Iron(Fe) is a transition element. When it bonds with oxygen(O) there can be different combinations:

    For Example, There can be:
    FeO2
    Fe2O3
    or
    FeO6

    If you named them like you would name regular metal-non-metal reactions, all three of these compounds would be named Iron Oxide. This isn�t acceptable because a scientist wouldn�t be able to tell which from the other. So, there�s just one more thing to do with transition metal naming.

    Here�s an example: FeO2

    First, write down the name of the transition metal:

    "That�s easy! it�s Iron(Fe)"

    Iron

    Second, in parentheses and roman numerals, put the charge of the transition metal:

    "Um, O.K. The charge of Oxygen is -2, and since there�s two oxygen�s the total charge is -4,
    and since there�s only one Iron to make up for that -4 charge, the iron must have a charge of +4"

    Iron(IV)

    Then, just put down the non-metal plus -ide (Table Below):

    "alright! it�s oxide(O)"

    Iron(IV) Oxide
    (pronounced "Iron four Oxide")

    Here�s another way to figure out the charge of the transition metal:

    Another example:
    Fe2O3

    • Each Oxygen has 6 electrons and it needs 2 more to get to 8, since there are 3 Oxygen's (3 x 2) they all need 6 electrons in total.
    • There are only 2 Irons(Fe) to give the 6 electrons, that must mean that each Iron has given 3 electrons (6/2 = 3)
    • When an Iron has 3 electrons to give that means it has a charge of +3

    SO naming it should be a piece of cake:

    Iron(III) Oxide
    (Pronounced "Iron three Oxide")

    Here�s a chart full of extra examples to help you:

    Compound Metal Charge Non-Metal -ide Final name
    CuCl2 Copper +2 Chlor- -ide Copper(II) Chloride
    CrF6 Chromium +6 Fluor- -ide Chromium(VI) Fluoride
    HgCl2 Mercury +2 Chlor- -ide Mercury(II) Chloride

    Also, Here�s a list of non-metals plus -ide:

    Nonmetal First part of nonmetal Nonmetals with -ide
    Bromine Brom- Bromide
    Carbon Carb- Carbide
    Chlorine Chlor- Chloride
    Fluorine Fluor- Fluoride
    Iodine Iod- Iodide
    Nitrogen Nitr- Nitride
    Oxygen Ox- Oxide
    Phosphorus Phosph- Phosphide
    Selenium Selen- Selenide
    Silicone Silic- Silicide
    Sulfur Sulf- Sulfide
    Tellurium Tellur- Telluride

    - So Basically, to name transition metals:

    • write down the name of the transition metal
    • In parentheses and roman numerals, put the charge of the transition metal
    • Just put down the non-metal plus -ide
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