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AIIMS2013Chemistryd and f Block Elements

Which of the following metal ion forms unstable complex with CN ⁻ ?

Options

  1. AAg ( I )
  2. BZn ( II )
  3. CCu ( II )
  4. DCr ( II )

Correct answer

A. Ag ( I )

Step-by-step solution

Except Ag(I), all ions form stable complexes with CN ⁻ .

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