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  4. In H2P2O7 , what is the oxidation number of P ?

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Q. In $H_{2}P_{2}O_{7}$ , what is the oxidation number of $P$ ?

NTA AbhyasNTA Abhyas 2022

Solution:

$\begin{bmatrix}+1 & x & -2 \\ H _2 & P _2 & O _7\end{bmatrix} $
$\therefore(+1 \times 2)+(2 x)+(-2 \times 7)=0$
or $x=+6$