An octahedral complex with molecular composition M.5 , NH_3.Cl.SO…

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