MCQ
The oxidation number of nitrogen in $NO_3^ - $ is
  • A
    $-1$
  • B
    $+2$
  • C
    $+3$
  • $+5$

Answer

Correct option: D.
$+5$
(d) $\mathop {NO_3^ - }\limits^{ * \,\,\,\,\,\,} $

$x - 2 \times 3 = - 1$; $x = 6 - 1 = + 5$.

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