how to calculate oxidation number.explain with examples
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H2O: 2(+1) + (-2) = 0. 10. The sum of the oxidation numbers in a polyatomic ion is equal to the charge on the ion. The oxidation number of the sulfur atom in the SO42- ion must be +6, for example, because the sum of the oxidation numbers of the atoms in this ion must equal -2.
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oxidation no. of Mg(NO3)2
let mg=x NO3=-1
x+(-1*2)=0
x-2=0
x=2
let mg=x NO3=-1
x+(-1*2)=0
x-2=0
x=2
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