MCQ
In which complex is the transition metal in zero oxidation state :
- A$[Co(NH_3)_6]Cl_2$
- B$[Fe(H_2O)_6SO_4]$
- C$[Ni(CO)_4]$
- ✓$[Fe(H_2O)_3](OH)_2$
✓
Answer
Correct option: D.
$[Fe(H_2O)_3](OH)_2$
d
$MnO _4^{-}$, has $Mn ^{+7}, d ^0$ configuration so no $d$ electron.
$MnO _4^{-}$, has $Mn ^{+7}, d ^0$ configuration so no $d$ electron.
$Co ^{+3}, d ^6$ configuration.
$Fe ^{-2}, d ^6$ configuration.
$Cr ^{+3}, d ^3$ configuration.
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