Hybridisation of hexaamminecobalt(III) complex [duplicate]








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[What is the hybridisation of titanium in the hexaaqua- and hexaamminetitanium(III) complex?](/questions/42991/what-is-the-hybridisation-of-titanium-in-the-hexaaqua-and-hexaamminetitaniumii)

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Does $\ce{[Cr(NH3)6]^3+}$ have $sp^3d^2$ or $d^2sp^3$ hybridisation?


Oxidation state of $\ce{Cr}$ is $+3$. The electronic configuration is $3d^3$ and the $d$ electrons occupy $t\_{2g}$ orbitals. If the electrons from the ligands were to occupy the $e\_g$ orbitals the stability of the complex decreases. So shouldn't the hybridisation be $sp^3d^2$?




It has d2sp3 configuration since NH3 is a strong field ligand which causes the electron to pair up and use the inner d orbitals(3d) .


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