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Coordination Compounds — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryCoordination Compounds5 Marks
MCQ
 Match the complex species given in Column $I$ with the possible isomerism given in Column $II$ and assign the correct code:
 
Column $I ($Complex species$)$
 
Column $II ($Isomerism$)$
$a.$ $[Co(NH_3)_4C_{l2}]^+$ $1.$
Optical
$b.$ $cis-[Co(en)_2Cl_2]^+$ $2.$
Ionisation
$c.$ $[Co(NH_3)_5 (NO_2)]Cl_2$ $3.$
Coordination
$d.$ $[Co(NH_3)_6][Cr(CN)_6]$ $4.$
Geometrical
    $5.$
Linkage
Code:
  • A
    $\text{A (1), B (2), C (4), D (5).}$
  • B
    $\text{A (4), B (3), C (2), D (1).}$
  • C
    $\text{A (4), B (1), C (5), D (3).}$
  • D
    $\text{A (4), B (1), C (2), D (3).}$
✓

Answer

 
Column $I ($Complex species$)$
 
Column $II ($Isomerism$)$
$a.$ $[Co(NH_3)_4C_{l2}]^+$ $4.$ Geometrical
$b.$ $cis-[Co(en)_2Cl_2]^+$ $1.$
Optical
$c.$ $[Co(NH_3)_5 (NO_2)]Cl_2$ $2.$
Ionisation
$d.$ $[Co(NH_3)_6][Cr(CN)_6]$ $3.$
Coordination
Explanation:
Isomerism in coordination compound is decided by type of ligands and geometry of coordination and arrangement of ligands.
  1. $[Co(NH_3)_4Cl_2]+$ shows geometrical isomerism due to presence of two types of ligand whose $[Co(NH_3)_4Cl_2]+$ arrangement around central metal ion.
  1. cis$-[Co(en)_2Cl_2]+$ shows optical isomer due to its non$-$superimposable mirror image relationship.
  1. $[Co(NH_3)_5(NO_2)]Cl_2$ shows ionization isomer due to its interchanging ligand from outside the ionization sphere.
  2. $[Co(NH_3)_6][Cr(CN)_6]$ shows coordination isomer due to interchanging of ligand in between two metal ions from one coordination sphere to another coordination sphere.

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