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NEET2007ChemistryGeneral Organic ChemistryActual

Which one of the following is expected to exhibit optical isomerism? (en = ethylenediamine )

Options

  1. Ac i s- [ Pt ( NH ₃ )₂ Cl ₂ ]
  2. Btrans- [ Co ( en )₂ Cl ₂ ]
  3. Ctrans - [ Pt ( NH ₃ )₂ Cl ₂ ]
  4. Dcis - [ ( Co ( en )₂ Cl ₂ ] .

Correct answer

B. trans- [ Co ( en )₂ Cl ₂ ]

Step-by-step solution

Cis (- [ Co ( en )₂ Cl ₂ ]⁺ ) is able to show the phenomenon of optical isomerism because it can form a superimposable mirror image. It gives super imposable structure but trans-form is optically inactive.

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