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NEET2017ChemistryCoordination CompoundsActual

Pick out the correct statement with respect to [ Mn ( CN ) 6 ] 3 - .

Options

  1. AIt is sp 3 d 2 hybridised and octahedral.
  2. BIt is sp 3 d 2 hybridised and tetrahedral.
  3. CIt is d 2 sp 3 hybridised and octahedral.
  4. DIt is dsp 2 hybridised and square planar.

Correct answer

C. It is d 2 sp 3 hybridised and octahedral.

Step-by-step solution

Mn CN 6 3 - Mn III = Ar 3 d 4 CN - being strong field ligand forces pairing of electrons. This gives t 2 g 4   e g 0 ∵       The coordination number of Mn = 6 ∴         Structure = octahedral Mn CN 6 3 - =

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