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18 March, 12:37

How does the Criss-Cross method work?

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  1. 18 March, 15:04
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    this is the method of finding the chemical formula of a metal and not metal,

    ex - The oxidation number of Al is + 3 and oxygen is - 2. Criss cross the absolute values to give Al2O 3

    so its just a switch
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