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Question

The chemical compositions of various coordination compounds are given in column-I as per Werners theory. Match these coordination compounds with the appropriate options given in column-II.

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Solution

(A) Silver nitrate reacts with chloride ion present in the ionization sphere to form white ppt of AgCl.
CoCl3.6NH3[|||Co(NH3)6]Cl3aq.[CO(NH3)6]3++3Cl;3Ag+3Cl3AgCl (white)
The oxidation state of Co is +3.
[|||Co(NH3)6]3+;3d6 configuration and therefore, complex is diamagnetic with d2sp3 hybridisation of centralmetal ion. It does not show isomerism.
(B)
Silver nitrate reacts with chloride ion present in the ionization sphere to form white ppt of AgCl.
PdCl2.4NH3[|||Pd(NH3)4]Cl2aq.[Pd(NH3)2+4]+2Cl;2Ag++2Cl2AgCl(white)
The oxidation state of Pd is +2 4d8 configuration and therefore complex is
diamagnetic with dsp2 hybridisation of central metal ion. It does not show isomerism.
(C) Silver nitrate reacts with chloride ion present in the ionization sphere to form white ppt of AgCl.
NiCl2.6H2O[|||Ni(H2O)6]Cl2aq.[Ni(H2O)6]2++2Cl;2Ag++2Cl2AgCl (white)
The oxidation state of Ni is +2.
[|||Ni(H2O)6]2+;3d6 configuration and therefore, complex is paramagnetic (n =2) with sp3d2 hybridisationof central metal ion. [|||Ni(H2O)6]Cl2 and [|||Ni(H2O)5]Cl. H2O are hydrate isomers.
(D) PtCl4.2HClH2[IVPtCl6]aq.2H+[PtCl6]2,5d6 configuration and therefore, complex is diamagnetic with d2sp3 hybridisation. It does not show isomerism.
The oxidation state of Pt is +4.

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