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    Hey guys,

    I'm currently doing oxidation numbers, and I find it difficult finding the oxidation number of a less familiar element (Basically an element tha's not oxygen or hydrogen or fluorine as I know they're oxidation numbers).

    For example:

    Deduce the oxidation state of each bold element:

    NaClO3 - Each of oxygen is -2, so in total oxygen is -6. But how am I am able to work out Na and Cl???

    KMnO4 - Likewise with this question also.

    Thank you!
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    (Original post by rm_27)
    Hey guys,

    I'm currently doing oxidation numbers, and I find it difficult finding the oxidation number of a less familiar element (Basically an element tha's not oxygen or hydrogen or fluorine as I know they're oxidation numbers).

    For example:

    Deduce the oxidation state of each bold element:

    NaClO3 - Each of oxygen is -2, so in total oxygen is -6. But how am I am able to work out Na and Cl???

    KMnO4 - Likewise with this question also.

    Thank you!
    Have you ever seen a group one metal in a state other than +1? If so, I take my hat off to you. But I haven't...

    So 1+Cl+(-6)=0
    Cl=+5
    and
    1+Mn+(-8)=0
    Mn=+7
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    Just follow the rules, as explained here:

    http://www.chembuddy.com/?left=balan...numbers-method

    One of the rules is "alkali metals are always +1". After that both your examples become trivial, as shown by langlitz.
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    (Original post by rm_27)
    Hey guys,

    I'm currently doing oxidation numbers, and I find it difficult finding the oxidation number of a less familiar element (Basically an element tha's not oxygen or hydrogen or fluorine as I know they're oxidation numbers).

    For example:

    Deduce the oxidation state of each bold element:

    NaClO3 - Each of oxygen is -2, so in total oxygen is -6. But how am I am able to work out Na and Cl???

    KMnO4 - Likewise with this question also.

    Thank you!
    Here's an interactive self test on oxidation numbers ... enjoy
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    This is really useful thanks. Do you know if there are any on shapes of molecules and ions?
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    (Original post by rm_27)
    This is really useful thanks. Do you know if there are any on shapes of molecules and ions?
    Check this out on shapes of molecules ..
 
 
 
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