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NEET2001ChemistryCoordination CompoundsActual

Which of the following compound is not coloured?

Options

  1. ANa ₂ [ CuCl ₄ ]
  2. BNa ₂ [ CdCl ₄ ]
  3. CK ₄ [ Fe ( CN )₆ ]
  4. DK ₃ [ Fe ( CN )₆ ]

Correct answer

B. Na ₂ [ CdCl ₄ ]

Step-by-step solution

Na ₂ [ CdCl ₄ ] Oxidation state of cadmium =+2 Electronic configuration of Cd ²⁺ 4 d¹⁰ As there is no d-d transition possible, the molecule is not coloured.

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