Which of the following pairs of complexes are isomeric with each their but their aqueous solutions exhibit different molar conductivities ?

Options

A. `[CoBr(NH_(3))_(5)SO_(4)" and "[Co(SO_(4))(NH_(3))_(5)]Br`
B. `[CoCl_(2)(NH_(3))_(4)" and "[CoCl(NO_(2))(NH_(3))_(4)]Cl`
C. `[PtCl_(2)(NH_(3))_(4)Br" and "[PtBr_(2)(NH_(3))_(4)]Cl`
D. `[Co(NO_(2))(NO_(3))_(5)Cl_(2)" and "[Co(ONO)(NH_(3))_(5)]Cl_(2)`

Answer

1

Explanation

`[CoBr(NH_(3))_(5)]SO_(4)hArr[CoBr(NH_(3))_(5)]^(2+)+SO_(4)^(2-)," Total charge"=4`
`[Co(SO_(4))(NH_(3))_(5)]BrhArr[Co(SO_(4))(NH_(3))_(5)]^(+)+Br^(-)," Total charge"=2`
Hence, both have different molar conductivities.