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Most Important Selected Qs for JEE AdvancedChemistryCoordination Compounds

Which of the following is/are correct

Options

  1. A[ CrCl ₂( CN )₂ ( NH ₃ )₂ ] and [ CrCl ₃ ( NH ₃ )₃ ] , both have d ^2 sp ^3 hybridisation
  2. BMagnetic moment of [ PdCl ₄ ]²⁻ is zero
  3. C[ Cu ( NH ₃ )₄ ]²⁺, [ Pt ( NH ₃ )₄ ]²⁺ and [ Ni ( CN )₄ ]²⁻ , all have dsp ^2 hybridization of central metal
  4. DIt is difficult to substitute chelating ligands compared to similar monodentate ligands

Correct answer

D. It is difficult to substitute chelating ligands compared to similar monodentate ligands

Step-by-step solution

Both complexes have Cr ⁺³ ( ~d ^3 ) , and coordination number is 6 . Hence d ^2 s p^3 Pd ⁺² ( ~d ^8 ) complexes with coordination number 4 are square plannar and magnetic moment is zero.

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