MCQ
Oxidation number of $Cr$ in the following complex is
  • A
    $3$
  • B
    $6$
  • C
    $4$
  • $5$

Answer

Correct option: D.
$5$
d
Sodium nitro prusside $\Rightarrow  Na_2 [Fe(CN)_5NO]$
                                     $\downarrow  Na_2S$
                                     $Na_4[Fe(CN)_5(NOS)]$

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