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KVPY2013ChemistryCoordination Compounds

In aqueous solution, [ Co ( H ₂ O )₆ ]²⁺( X ) reacts with molecular oxygen in the presence of excess liquor NH ₃ to give a new complex Y. The number of unpaired electrons in X and Y are, respectively

Options

  1. A3,1
  2. B3,0
  3. C3,3
  4. D7,0

Correct answer

B. 3,0

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