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5. Co-ordination chemistry — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry5. Co-ordination chemistry1 Mark
MCQ
An octahedral complex with molecular composition $M.5\, NH_3.Cl.SO_4$ has two isomers, $A$ and $B$. The solution of $A$ gives a white precipitate with $AgNO_3$ solution and the solution of $B$ gives white precipitate with $BaCl_2$ solution. The type of isomerism exhibited by the complex is
  • A
     Linkage isomerism
  • ✓
    Ionisation isomerism
  • C
    Coodinate isomerism
  • D
    Geomerical isomerism
✓

Answer

Correct option: B.
Ionisation isomerism
b
The two possible isomers for the given octahedral complex are $[M(NH_3)_5SO_4]Cl$ and $(M(NH_3)_5Cl]SO_4$. They respectively give chloride ion (indicated by precipitation with $BaCl_2$  ) and $SO_4$ ion (indicated by precipitation with $AgNO_3$). Hence the type of isomerism exhibited by the complex is ionization isomerism

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