Homework Answers
Answer:
Before , going to calculate oxidation number we should know some important point
* All diatomic molecule has 0 oxidation state.
* O has -2 oxidation state , while H+ has +1 oxidation state.
*In case of single ion, the oxidation number is equal to the charge at that ion , for e.g. in Mn2+ , oxidation number=2
* In case of a molecule, consider the oxidation number of atom which to be calculated is x ,and then add or subtract the oxidation number of ligand associated to that molecule and do equal to the charge on whole molecule (in case no charge , write 0 ) ,and then calculate.for e.g.
MnO2 = x-2(2) =0
x=+4.
Thus , oxidation number of Mn = +4.
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