The complexes given below show:

In which of the following complexes is the pairing of $(n-1)d$ electrons $NOT$ present in the presence of strong field ligands $(SFL)$?

Match the complexes in Column-$I$ with their properties listed in Column-$II$.

Column-$I$	Column-$II$
$A$. $[Co(NH_3)_4(H_2O)_2]Cl_2$	$p$. geometrical isomers
$B$. $[Pt(NH_3)_2Cl_2]$	$q$. paramagnetic
$C$. $[Co(H_2O)_5Cl]Cl$	$r$. diamagnetic
$D$. $[Ni(H_2O)_6]Cl_2$	$s$. metal ion with $+2$ oxidation state

Which of the following complexes is diamagnetic and tetrahedral?

Given below are two statements:
Statement-$I$: Hybridisation, shape, and spin-only magnetic moment of $K_{3}[Co(CO_{3})_{3}]$ are $sp^{3}d^{2}$, octahedral, and $4.9 \ BM$ respectively.
Statement-$II$: Geometry, hybridisation, and spin-only magnetic moment values $(BM)$ of the ions $[Ni(CN)_{4}]^{2-}$, $[MnBr_{4}]^{2-}$, and $[CoF_{6}]^{3-}$ respectively are square planar, tetrahedral, octahedral; $dsp^{2}$, $sp^{3}$, $sp^{3}d^{2}$ and $0, 5.9, 4.9$.

The correct statements from the following are:
$A$. The strength of anionic ligands can be explained by crystal field theory.
$B$. Valence bond theory does not give a quantitative interpretation of kinetic stability of coordination compounds.
$C$. The hybridization involved in the formation of $\left[Ni(CN)_4\right]^{2-}$ complex is $dsp^2$.
$D$. The number of possible isomer$(s)$ of $cis-\left[PtCl_2(en)_2\right]^{2+}$ is one.
Choose the correct answer from the options given below: