(A) In option $A$,the pair $[Cr(NO_2)(NH_3)_5][ZnCl_4]$ and $[Cr(NO_3)(NH_3)_5][ZnCl_4]$ are not isomers because the ligands $NO_2^-$ and $NO_3^-$ are

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

$[Cr(NO_2)(NH_3)_5][ZnCl_4], [Cr(NO_3)(NH_3)_5][ZnCl_4]:$ Linkage isomerism

(A) In option $A$,the pair $[Cr(NO_2)(NH_3)_5][ZnCl_4]$ and $[Cr(NO_3)(NH_3)_5][ZnCl_4]$ are not isomers because the ligands $NO_2^-$ and $NO_3^-$ are different chemical species. Linkage isomerism occurs when an ambidentate ligand (like $NO_2^-$ or $SCN^-$) coordinates through different donor atoms. $NO_3^-$ is not an ambidentate ligand. Therefore,$A$ is the incorrect match.

Class 12 Chemistry Coordination Compounds Isomerism and Magnetic properties

Difficult

Select the incorrect match.

A
$[Cr(NO_2)(NH_3)_5][ZnCl_4], [Cr(NO_3)(NH_3)_5][ZnCl_4]:$ Linkage isomerism
B
$[Co(NO_2)(H_2O)(en)_2]Cl_2, [CoCl(NO_2)(en)_2]Cl \cdot H_2O:$ Hydrate isomerism
C
$[Cu(NH_3)_4][PtCl_4], [CuCl(NH_3)_3][PtCl_3(NH_3)]:$ Coordination isomerism
D
$[Ni(CN)(H_2O)(NH_3)_4]Cl, [NiCl(H_2O)(NH_3)_4]CN:$ Ionization isomerism