About $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6{\mathrm{Cl}}_2\right]$ and $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6{\mathrm{Cl}}_3\right]$, a correct match is

                                 $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6{\mathrm{Cl}}_3\right]$    $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6{\mathrm{Cl}}_2\right]$

1.  Stability        $\to$        less                     more

2.  Magnetism    $\to$     Paramagnetic      Diamagnetic

3.  Hybridization $\to$      ${\mathrm{sp}}^3{\mathrm{d}}^2$                ${\mathrm{d}}^2{\mathrm{sp}}^3$

4.  Complex       $\to$      Inner orbital       Outer orbital

$\left[\mathrm{Ni}{\left({\mathrm{PPh}}_3\right)}_4\right]$ and ${\left[{\mathrm{NiCl}}_4\right]}^{2-}$have geometry, hybridization and magnetic moments of the ions respectively

1.  Tetrahedral, tetrahedral; ${\mathrm{sp}}^3, {\mathrm{sp}}^3$; O, 2.82

2.  Tetrahedral, square planar; ${\mathrm{sp}}^3, {\mathrm{dsp}}^2$; O, 2.82

3.  Tetrahedral, octahedral; ${\mathrm{sp}}^3, {\mathrm{d}}^2{\mathrm{sp}}^3$; 2.82, O

4.  Square planar, tetrahedral; ${\mathrm{dsp}}^2, {\mathrm{sp}}^3$; 2.82, 2.82

The geometries of $\mathrm{Ni}{\left(\mathrm{CO}\right)}_4$ and [Ni(PPh₃)₂Cl₂] are : 

1.  Both square planar.

2.  Tetrahedral and square planar, respectively.

3.  Both tetrahedral.

4.  Square planar and tetrahedral, respectively.

which one of the following high spin complexes has the largest crystal field stabilization energy?

1.  ${\left[\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+}$

2.  ${\left[\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{3+}$

3.  ${\left[\mathrm{Mn}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+}$

4.  ${\left[\mathrm{Mn}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{3+}$

It is an experimental fact that DMG + Ni(ll)salt + ${\mathrm{NH}}_4\mathrm{OH}$ $\to$ Red precipitate Which of the following is wrong about this red precipitate?

(1)  It is a non-ionic complex

(2)  It has a square planar geometry

(3)  It has tetrahedral geometry

(4)  It is a diamagnetic complex

Which among the following species is colored as per CFT?

1.  ${\left[\mathrm{Ti}{\left({\mathrm{H}}_2\mathrm{O}\right)}_5\right]}^{4+}$

2.  ${\left[\mathrm{Cr}{\left({\mathrm{NH}}_3\right)}_6\right]}^{3+}$

3.  $\mathrm{K}\left[{\mathrm{VF}}_6\right]$

4.  ${\left({\mathrm{NH}}_4\right)}_2\left[{\mathrm{TiCl}}_6\right]$

$$\begin{gathered} \mathrm{Among} \left(\mathrm{i}\right) \left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right]{\mathrm{CI}}_3,\left(\mathrm{ii}\right)\left[\mathrm{Ni}{\left({\mathrm{NH}}_3\right)}_6\right]{\mathrm{CI}}_2,\left(\mathrm{iii}\right)\left[\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]{\mathrm{CI}}_3,\left(\mathrm{iv}\right) \\ \left[\mathrm{Fe}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]{\mathrm{CI}}_2, \mathrm{the} \mathrm{diamagnetic} \mathrm{complex} \mathrm{is} \end{gathered}$$

1.  i

2.  ii

3.  iii

4.  iv

For which of the following complexes IUPAC names is not correctly assigned?

1.  $\mathrm{Na}\left[\mathrm{Pt}\left({\mathrm{NH}}_3\right)\mathrm{BrCl}\left({\mathrm{NO}}_2\right)\right]$-Sodium amminebromidochlorido nitrito-N-pIatinate(II)

2.  $\left[{\mathrm{CuCl}}_2{\left(\mathrm{O} = \mathrm{C}{\left({\mathrm{NH}}_2\right)}_2\right)}_2\right]$-Dichlorobis (dicarboxido tetraamine) copper (II)

3.   ${\left[{\mathrm{PtCl}}_3\left({\mathrm{\eta }}^2 - {\mathrm{C}}_2{\mathrm{H}}_4\right)\right]}^{-}$ —Trichlorido (${\mathrm{\eta }}^2$ — ethylene) platinate(ll) ion

4.  ${\left[\mathrm{Fe}\left(\mathrm{Cl}\right){\left(\mathrm{CN}\right)}_4\left({\mathrm{O}}_2\right)\right]}^{4-}$—Chloridotetracynosuperoxoferrate (II) ion

The number of isomers of $\left[\mathrm{Co}\left(\mathrm{dien}\right){\mathrm{CI}}_3\right]$ is (where 'dean' is diethylene triamine)

1.  2

2.  3

3.  44.  5

Choose the incorrect statement regarding the complex $\left[{\mathrm{NiCl}}_2{\left({\mathrm{PR}}_3\right)}_2\right]$
(1) When R group in ${\mathrm{PR}}_3$ is ${\mathrm{C}}_6{\mathrm{H}}_5$ then complex will be tetrahedral

(2) When R group in ${\mathrm{PR}}_3$ is cyclohexyl then complex will be square planar

(3) When R group is H then equilibrium mixture of tetrahedral and square planar form is obtained

(4) When R group is H then complex will be tetrahedral only