Identify the complex having the highest number of unpaired electrons from the following:

Match the List-$I$ with List-$II$

List-$I$ (Molecules/ion)	List-$II$ (Hybridisation of central atom)
$A. PF_5$	$I. dsp^2$
$B. SF_6$	$II. sp^3d$
$C. Ni(CO)_4$	$III. sp^3d^2$
$D. [PtCl_4]^{2-}$	$IV. sp^3$

Choose the correct answer from the options given below $:$

Match the following:

List-$I$ (Hybridisation)	List-$II$ (Compound/ion)
$A. sp^3d$	$I. [PtCl_4]^{2-}$
$B. sp^3d^2$	$II. SF_6$
$C. dsp^2$	$III. BCl_3$
$D. dsp^3$	$IV. PCl_5$
	$V. ClF_3$

The correct match is:

The $d$-electronic configuration of an octahedral $Co(II)$ complex having magnetic moment of $3.95 \ BM$ is :

The one that can exhibit the highest paramagnetic behaviour among the following is:-
$gly = \text{glycinato}$; $bpy = 2,2'-\text{bipyridine}$

Nickel $(Z = 28)$ combines with a uninegative monodentate ligand to form a diamagnetic complex $[NiL_4]^{2-}$. The hybridisation involved and the number of unpaired electrons present in the complex are respectively