Complexes containing halide ligands are generally .....

The electronic configuration of the central metal atom/ion in $\left[ Co(CN)_6 \right]^{3-}$ is

For a $d^{4}$ metal ion in an octahedral field,the correct electronic configuration is:

Match List-$I$ with List-$II$.
List-$I$ (Chromium $(III)$ Complexes) - List-$II$ ($\Delta_o$ $(cm^{-1})$)
$A$. $[Cr(CN)_6]^{3-}$ - $I$. $15,060$
$B$. $[CrF_6]^{3-}$ - $II$. $17,400$
$C$. $[Cr(H_2O)_6]^{3+}$ - $III$. $22,300$
$D$. $[Cr(en)_3]^{3+}$ - $IV$. $26,600$
Choose the correct answer from the options given below:

Which among the following complexes is associated with the maximum wavelength of light absorbed?

The complex with the highest magnitude of crystal field splitting energy $\left(\Delta_0\right)$ is