Which of the following complexes is octahedra | vedclass

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(C) The complex $K_3[Co(CN)_6]$ contains the central metal ion $Co^{3+}$.The electronic configuration of $Co^{3+}$ is $[Ar] 3d^6$.$CN^-$ is a strong f

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$K_3[Co(CN)_6]$

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(C) The complex $K_3[Co(CN)_6]$ contains the central metal ion $Co^{3+}$.The electronic configuration of $Co^{3+}$ is $[Ar] 3d^6$.$CN^-$ is a strong field ligand,which causes pairing of electrons in the $d$-orbitals,resulting in a low-spin $t_{2g}^6 e_g^0$ configuration.Since all electrons are paired,the magnetic moment $\mu_s = 0$,making it diamagnetic.Due to the strong field nature of $CN^-$ and the formation of a low-spin complex,it is the most stable among the given options.

Which of the following complexes is octahedral,diamagnetic,and the most stable?

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