Match the complex species given in column I with the possible isomerism given in Column II and assign the correct code.

Options

A. (i) (A,B,C,D):(1,2,4,3)
B. (ii) (A,B,C,D):(4,3,2,1)`
C. (iii) (A,B,C,D): (4,2,1,3)
D. (iv) (A,B,C,D):(4,1,2,3)

Answer

A, B, C, D

Explanation

Isomerism in coordination compound is decided by type of ligands and geomwtry of coordination and arrangement of ligands.
A. `[Co(NH_(3))_(4)Cl_(2)]^(+)` shows geometrical isomerism due to presence of two types of ligand whose `[Co(NH_(3))_(4)Cl_(2)]^(+)` arrangement around central metal ion.

B. cis- `[Co(en)_(2)Cl_(2)]^(+)` shows optical isomer due to its non-superimposable mirror image relationsphip.

c. `[Co(NH_(3))_(5)(NO_(2))]Cl_(2)` shows ionisation isomer due to its interchanging ligand from outside the ionisation sphere.
D. `[Co(NH_(3))_(6)][Cr(CN)_(6)]` shows coordination isomer due to intercharnging of ligand in between two metal ions from one coordination sphere to another coordination sphere.
Hence, correct choice is (d).