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KCET2007ChemistryCoordination Compounds

Which complex cannot ionise in solution?

Options

  1. A[ CoCl ₃ ( NH ₃ )₃ ]
  2. BK ₄ [ Fe ( CN )₆ ]
  3. CK ₂ [ Pt ( F ₆ ) ]
  4. D[ Pt ( NH ₃ )₆ ] Cl ₄

Correct answer

A. [ CoCl ₃ ( NH ₃ )₃ ]

Step-by-step solution

[ CoCl ₃ ( NH ₃ )₃ ] cannot ionise in solution because three chloride ions satisfy primary and secondary valencies. It will not be precipitated by the addition of AgNO ₃ .

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