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JEE Advanced2013ChemistryCoordination CompoundsActual

The pair(s) of coordination complexes/ions exhibiting the same kind of isomerism is (are)

Options

  1. ACr NH 3 5 Cl Cl 2 and Cr NH 3 4 Cl 2 Cl
  2. BCo NH 3 4 Cl 2 + and Pt NH 3 2 H 2 O Cl +
  3. CCo Br 2 Cl 2 2 - and Pt Br 2 Cl 2 2 -
  4. DPt NH 3 3 NO 3 Cl and Pt NH 3 3 Cl Br

Correct answer

B. Co NH 3 4 Cl 2 + and Pt NH 3 2 H 2 O Cl +

Step-by-step solution

Cr NH 3 5 Cl Cl 2 and Cr NH 3 4 Cl 2 Cl , both compounds will not show either structural or stereoisomerism. Co NH 3 4 Cl 2 + and Pt NH 3 2 H 2 O Cl + , Ma 4 b 2 type (octahedral), Ma 2 bc type (square planar) and both will show geometrical isomerism. ​ Co Br 2 Cl 2 2 - and Pt Br 2 Cl 2 2 - , Ma 4 b 2 type (tetrahedral), Ma 2 b 2 (square planar). ​ Pt NH 3 3 NO 3 Cl and Pt NH 3 3 Cl Br both will show ionisation isomerism. ​

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