Question
Oxidation number of $P$ in $Mg_2P_2O_7$ is
✓
Answer
$Mg_2 P_2O_7$
$2 \times 2 + 2x -14 = 0$
$2x = 10$
$x = 5$
$2 \times 2 + 2x -14 = 0$
$2x = 10$
$x = 5$
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