MCQ
Oxidation number of $P$ in $M{g_2}{P_2}{O_7}$ is
  • A
    $+3$
  • B
    $+2$
  • $+5$
  • D
    $-3$

Answer

Correct option: C.
$+5$
(c) $\mathop {M{g_2}{P_2}{O_7}}\limits^{\,\,\, * } $

$4 + 2x - 2 \times 7 = 0$;$2x = 14 - 4 = 10$

$2x = 10$; $x = \frac{{10}}{2} = + \,5$.

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