$STATEMENT-1$: $[Fe(H_2O)_5NO]SO_4$ is paramagnetic.
$STATEMENT-2$: The $Fe$ in $[Fe(H_2O)_5NO]SO_4$ has three unpaired electrons.

Consider the following test for a group-$IV$ cation.
$M^{2+} + H_2S \rightarrow A$ (Black precipitate) $+$ byproduct
$A + \text{aqua regia} \rightarrow B + NOCl + S + H_2O$
$B + KNO_2 + CH_3COOH \rightarrow C + \text{byproduct}$
The spin only magnetic moment value of the metal complex $C$ is $BM$. (Nearest integer)

Which of the following sequences of hybridisation, geometry, and magnetic nature are correct for the given coordination compounds?
$A.$ $[NiCl_4]^{2-}$ – $sp^3$, tetrahedral, paramagnetic  
$B.$ $[Ni(NH_3)_6]^{2+}$ – $sp^3d^2$, octahedral, paramagnetic  
$C.$ $[Ni(CO)_4]$ – $sp^3$, tetrahedral, paramagnetic  
$D.$ $[Ni(CN)_4]^{2-}$ – $dsp^2$, square planar, diamagnetic  
Choose the correct answer from the options given below:

The geometries of $Ni(CO)_4$ and $Ni(PPh_3)_2Cl_2$ are:

What is the type of magnetic behavior and geometry respectively in Cuproammonium sulphate (Atomic no. of $Cu=29$)?

What type of geometry and magnetic nature is present in the complex $[NiCl_4]^{2-}$?