Identify the number of unpaired electrons present and the geometry respectively of a complex…

Identify the number of unpaired electrons present and the geometry respectively of a complex $\left[\mathrm{CoF}_6\right]^{3-}($ given atomic number $\mathrm{Co}=27$ )
  1. 4, Octahedral
  2. 2 , trigonal bipyramidal
  3. 0 , Octahedral
  4. 0 , trigonal bipyramidal

Solution

In the presence of $\mathrm{F}^{\Theta}$ Weak field ligand electronic configuration remains same $\therefore$ No of unpaired $\mathrm{e}^{-}=4$ and hybridisation is $\mathrm{sp}^3 \mathrm{~d}^2$, octahedral geometry

Asked in: MHT CET 2022 (08 Aug Shift 1)

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