question_answer 81)

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

	Column 1 (Complex species)	Column 11 (Isomerism)
A.   B.   C. D.		1. Optical     2. lonisation    3. Coordination 4. Geometrical

            Codes      A   B   C   D                        A   B   C   D (a) 1   2   4   3                   (b) 4   3   2   1 (c) 4   2    1 3                   (d) 4   1   2   3

Answer:

                    A. ®(4)    B.®(1)    C.®(2)    D.®(3) Isomerism in coordination compound, is decided by type of ligands and geometry of coordination and arrangement of ligands. A.  shows geometrical isomerism due to presence of two types of ligand whose arrangement around central metal ion. B.  shows optical isomer due to its non-superimposable mirror image relationship.                                                           C.  shows ionisation isomer. due to its interchanging ligand from outside the ionisation sphere. D.  shows   Coordination isomer due to interchanging of ligand in between two metal ions from one coordination sphere to another coordination sphere. Hence, correct choice is (d)...