Select the complex in which the metal has pri | vedclass

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(C) Primary valency corresponds to the oxidation state of the metal,and secondary valency corresponds to the coordination number.For $[Pt(NH_3)_2Cl_2]

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$[Pt(NH_3)_2Cl_2]$

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(C) Primary valency corresponds to the oxidation state of the metal,and secondary valency corresponds to the coordination number.For $[Pt(NH_3)_2Cl_2]$:$1$. The oxidation state of $Pt$ is $+2$,so primary valency $= 2$.$2$. The coordination number is $4$ (two $NH_3$ and two $Cl^-$ ligands),so secondary valency $= 4$.$3$. Square planar complexes of the type $[MA_2B_2]$ exhibit geometrical (stereo) isomerism (cis and trans forms).

Select the complex in which the metal has primary valency $= 2$,secondary valency $= 4$ and shows stereo-isomerism:

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