Coordination Compounds 2 Question 56

####58. Match the complexes in Column I with their properties listed in Column II.

(2007,6M)

Column I Column II
(A) [Co(NH3)4(H2O)2]Cl2 p. Geometrical isomers
(B) [Pt(NH3)2Cl2] q. Paramagnetic
(C) [Co(H2O)5Cl]Cl r. Diamagnetic
(D) [Ni(H2O)6]Cl2 s. Metal ion with +2
oxidation state

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Solution:

  1. (A) [Co(NH3)4(H2O)2]Cl2:Co2+,3d7 show geometrical isomerism, paramagnetic.

(B) Pt(NH3)2Cl2:Pt2+ has d8-configuration with all paired electrons. Show geometrical isomerism, diamagnetic.

(C) [Co(H2O)5Cl]Cl:Co2+,3d7

Cannot show geometrical isomerism, paramagnetic.

(D) [Ni(H2O)6]Cl2:Ni2+,3d8, weak ligand, has two unpaired electrons. Paramagnetic but cannot show geometrical isomerism.



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