An octahedral complex having molecular composition Co.5 NH_ 3 .Cl… - Vidyadip

MCQ

An octahedral complex having molecular composition $Co.5 \mathrm{NH}_{3}.\mathrm{Cl}. \mathrm{SO}_{4}$ has two isomers A and B. The solution of A gives a white precipitate with $\mathrm{AgNO}_{3}$ solution and the solution of B gives white precipitate with $\mathrm{BaCl}_{2}$ solution. The type of isomerism exhibited by the complex is,

A
Co-ordinate isomerism
B
Linkage isomerism
C
Ionisation isomerism
D
Geometrical isomerism

✓

Answer

C. Ionisation isomerism
(A) complex is $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5}\left(\mathrm{SO}_{4}\right)\right] \mathrm{Cl}$
(B) complex is $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{Cl}\right] \mathrm{SO}_{4}$
Both (A) and (B) are Ionisation isomers.

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