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Calculate the oxidation number of phosph...

Calculate the oxidation number of phosphorus in the following species.
(a) `HPO_(3)^(2-)``" "`(b)`PO_(4)^(3-)`

Text Solution

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(a) Suppose that the O.N. of P in `HPO_(3)^(2-)` be x
Then, `1+x+3(-2)=-2`
or, `x+1-6=-2`
or, `x=+3`
(b) Suppose that the O.N. of P in `PO_(4)^(3-)` be x
Then, `x+4(-2)=-3`
or, `x-8=-3`
or, `x=+5`
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