If Ni²⁺ is replaced by Pt²⁺ in the complex , which of the following properties are expected to get changed?
A. Geometry B. Geometrical isomerism C. Optical isomerism D. Magnetic properties

Question

If Ni²⁺ is replaced by Pt²⁺ in the complex , which of the following properties are expected to get changed?
A. Geometry  B. Geometrical isomerism  C. Optical isomerism  D. Magnetic properties

Canvas Classes · Accepted Answer

Strategy:
 Compare the geometry, isomerism, and magnetic properties of  and  in a 4-coordinate environment.

Step 1: Analyze 
 has a  configuration. With weak field halide ligands, it forms a tetrahedral complex ( hybridisation).
Tetrahedral complexes of the type  do NOT show geometrical isomerism.
It has 2 unpaired electrons, so it is paramagnetic.

Step 2: Analyze 
 also has a  configuration (specifically ). However, elements in the 4d and 5d series experience very high crystal field splitting

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