In which of the following pair of compounds, oxidation number of P ato

1.	In which of the following pair of compounds, oxidation number of P atoms are same?
Answer» `H_(3)PO_(2)andH_(3)PO_(4)` `H_(3)PO_(4)andH_(4)P_(2)O_(7)` `H_(3)PO_(2)andH_(3)PO_(3)` `H_(3)PO_(3)andH_(3)PO_(4)` Solution :(i) `H_(3)PO_(2):3(H)+P+2(O)=0` `therefore3(+1)+X+2(-2)=0` `thereforex=+1` (II) `H_(3)PO_(4):3(+1)+(P)+4(O)=0` `therefore3(+1)+x+4(-2)=0` `thereforex=+5` (iii) `H_(4)P_(2)O_(7):4(H)+2(P)+7(O)=0` `therefore4(+1)+2(x)+7(-2)=O` `thereforex=+5` (iv) `H_(2)PO_(3): 3(H)+P+3(O)=0` `3(+1)+x+3(-2)=0` `thereforex=+3` From the above calculation

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