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NEET2015ChemistryCoordination CompoundsActual

Which of these statements about C o C N 6 3 - is true?

Options

  1. AC o C N 6 3 - has no unpaired electrons and will be in a low-spin configuration.
  2. BC o C N 6 3 - has four unpaired electrons and will be in a low-spin configuration.
  3. CC o C N 6 3 - has four unpaired electrons and will be in a high-spin configuration.
  4. DC o C N 6 3 - has no unpaired electrons and will be in a high-spin configuration.

Correct answer

A. C o C N 6 3 - has no unpaired electrons and will be in a low-spin configuration.

Step-by-step solution

Due to strong Ligand field of C N - ions pairing of electrons takes place in inner 3d orbital it is a low spin complex with no unpaired electrons.

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