The geometry of the $[Cu(NH_3)_4]^{2+}$ ion (tetraamminecopper$(II)$ ion) is ................ .

The number of unpaired electrons responsible for the paramagnetic nature of the following complex species are respectively $:$
$[Fe(CN)_6]^{3-}, [FeF_6]^{3-}, [CoF_6]^{3-}, [Mn(CN)_6]^{3-}$

Match List-$I$ with List-$II$:

List-$I$ (Complexes)	List-$II$ (Hybridisation)
$A$. $[Ni(CO)_4]$	$I$. $sp^3$
$B$. $[Cu(NH_3)_4]^{2+}$	$II$. $dsp^2$
$C$. $[Fe(NH_3)_6]^{2+}$	$III$. $sp^3d^2$
$D$. $[Fe(H_2O)_6]^{2+}$	$IV$. $d^2sp^3$

Identify the hybridization of the central metal atom in the $[Fe(CO)_5]$ complex.

In $[Cu(NH_3)_4]SO_4$,$Cu$ has the following hybridization:

Which of the following statements is correct regarding the $[Fe(CN)_6]^{4-}$ complex?