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Coordination Compounds — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryCoordination Compounds1 Mark
MCQ
The hybridisation involved in $\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$ is?
  • A
    $\ce{sp^3d^2}$
  • B
    $\ce{sp^3d^3}$
  • C
    $\ce{dsp^3}$
  • ✓
    $\ce{d^2sp^3}$
✓

Answer

Correct option: D.
$\ce{d^2sp^3}$
$ {\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}=\mathrm{CO}^{3+}=[\mathrm{Ar}] 3 \mathrm{d}^6} $
$ \mathrm{C}_2 \mathrm{O}^{2-}=$ Strong field ligand.
$=\mathrm{d}^2 \mathrm{sp}^3$ Hybridisation
Octahedral
$ \left(\mathrm{C}_2 \mathrm{O}_4\right)^{-2}=$ Bidentate Ligand

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