Worksheet: Hybridization in Transition Metal Complexes

In this worksheet, we will practice defining hybrid orbitals and assigning the hybridization of transition metals based on their electron pair geometries.

Q1:

According to valence bond theory, what is the difference between a complex with d2sp3 hybridization and another with sp3d2 hybridization?

  • AThe complex having d2sp3d2 hybridization does not exist; the electrons must fill the orbitals with the same principal quantum number.
  • BThere is no actual difference; the orbitals involved are the same, only listed in a different order.
  • CThe complex having d2sp3 hybridization is an outer-shell complex, while the complex with sp3d2 hybridization is an inner-shell complex.
  • DThe complex having sp3d2 hybridization does not exist; the electrons must fill the lowest energy orbitals first.
  • EThe complex having d2sp3 hybridization is an inner-shell complex, while the complex with sp3d2 hybridization is an outer-shell complex.

Q2:

The size of the crystal field splitting in octahedral transition metal complexes only influences the electronic configuration when there is a choice between pairing electrons in the t2g orbitals and half-filling the eg orbitals. Which of the following d subshell occupancies allows for high-spin and low-spin octahedral complexes with different electronic configurations?

  • Ad0
  • Bd4
  • Cd10
  • Dd2
  • Ed8

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