Which of the following coordination complexes are optically active and whose optical activity does not depend on the orientation (arrangement) of ligands around the metal cation?

(i) [CoCl₃(NH₃)₃]
(ii) [Co(en)₃]³⁺
(iii) [Co(C₂O₄)₂(NH₃)₂]⁻
(iv) [CrCl₂(NH₃)₂(en)]⁺

1.  (ii),(iii) and (iv)   

2.  (i),(ii) and (iv)     

3.   (ii) and (iv)     

4.  only (ii)

Choose the correct code regarding, possible number of geometrical isomers exhibited by the following complexes:

(I) $\left[{\mathrm{CrCl}}_2\right({\mathrm{NO}}_2{)}_2({\mathrm{NH}}_3{)}_2{]}^{-}$                        (II) $\left[\mathrm{Co}\right({\mathrm{NO}}_2{)}_3\left({\mathrm{NH}}_3{)}_3\right]$

(III)  $\mathrm{PtCl}\left({\mathrm{NO}}_2\right({\mathrm{NH}}_3\left)\right(\mathrm{py}\left)\right]$                      (IV) $\left[\mathrm{PtBrCl}\right(\mathrm{en}\left)\right]$
 

         (I)     (II)     (III)      (IV)        

1.      4        2         3        1

2.      5        2        4         0

3.      3       2         0         1
 
4.      5        2        3         0

Total number of geometrical isomers  possible for complex $\left[\mathrm{Mab}\right(\mathrm{AB}{)}_2{]}^{\mathrm{n}\pm }$ are : 

(1) 5         

(2)  4       

(3)  3         

(4)  6

Select the correct statement about given square planar complex :

1.  It has no geometrical isomer

2.  It is optically active because square planar complex have plane of symmetry

3.  It is optically inactive because square planar complex have plane of symmetry

4.  It is optically active because it has symmetric carbon

Select the correct code regarding total number of space isomers for the following compounds:

(I)$[{\mathrm{Ma}}_3{\mathrm{b}}_2\mathrm{c}{]}^{\mathrm{n}\pm }$          (II) $\left[\mathrm{M}\right(\mathrm{AB}{)}_3{]}^{\mathrm{n}\pm }$      (III) $[{\mathrm{Ma}}_2{\mathrm{b}}_2{\mathrm{c}}_2{]}^{\mathrm{n}\pm }$

                (I)         (II)       (III)                              (I)         (II)       (III)

(a)             4           4           6                       (b)      4            3           5

(c)              3          3            5                      (d)       3            4           6

How many geometrical isomers are possible or $\left[{\mathrm{Pd}}^{2+}\right({\mathrm{NH}}_2-\mathrm{CH}\left({\mathrm{CH}}_3\right)-{\mathrm{CO}}_2^{-}{)}_2]$

(a) 2          (b)  3         (c)  4           (d)  6

Total number of stereisomers of $\left[\mathrm{Co}\right(\mathrm{acac}{)}_2\mathrm{BrCl}{]}^{⊝}$ are:

(1) 4         

(2) 3         

(3) 6           

(4) 2

Which of the following complex compound exhibits geometrical isomerism?

(1) $\left[\mathrm{Fe}\right(\mathrm{DMG}{)}_2$                         

(2) $\left[\mathrm{Be}\right(\mathrm{gly}{)}_2]$

(3) $\left[\mathrm{PdClBr}\right(\mathrm{gly}\left)\right]$                       

(4) $\left[\mathrm{Cd}\right({\mathrm{NH}}_3\left)\mathrm{Cl}\right(\mathrm{gly})$

In which case the racemic mixture is obtained by mixing its mirror images (d & l form) in 1:1 molar ratio?

1. [Co(gly)₃]                            

2. [Ni(DMG)₂]

3. cis-[Cu(gly)₂]                              

4. [Zn(en)(gly)]⁺

Which of the following compound shows optical isomerism?

(1) cis-$\left[{\mathrm{CrCl}}_3\right({\mathrm{NH}}_3{)}_3]$                         

(2) cis-$\left[\mathrm{Co}\right({\mathrm{NH}}_3{)}_4{\mathrm{Cl}}_2{]}^{+}$

(3) $\left[\mathrm{Co}\right(\mathrm{en}{)}_3{]}^{3+}$                                   

(4) trans-$\left[\mathrm{Co}\right(\mathrm{en}{)}_2{\mathrm{Cl}}_2{]}^{+}$