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This guide provides a detailed approach to assigning oxidation numbers for a variety of chemical compounds, including ionic species like CaI2, Na2CO3, and Na2Cr2O7, as well as complex ions such as MoO42- and Ga(ClO3)3. It covers organic compounds like C2H3O2- and ammonium phosphate (NH4)3PO4 and inorganic salts such as FeSO4 and Mg(NO3)2. Understanding oxidation numbers is essential for balancing redox reactions and predicting chemical behavior.
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