Crystal Field Theory Quiz

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Questions and Answers

In an octahedral crystal field, which d-orbitals occupy the higher energy level?

  • dxz, dyz
  • dxy, dyz, dxz
  • dx2-y2, dz2 (correct)
  • dxy, dz2

In a tetrahedral crystal field, the t2 orbitals are at a lower energy level than the e orbitals.

True (A)

What is the representation of the crystal field splitting energy for octahedral complexes?

Δo

In an octahedral crystal field, the energy of the eg orbitals increases by _____ from the average energy.

<p>3/5Δo</p> Signup and view all the answers

Match the following d-orbitals with their corresponding energy levels in an octahedral and tetrahedral crystal field:

<p>dxy, dyz, dxz = Lower energy in octahedral, higher energy in tetrahedral dx2-y2, dz2 = Higher energy in octahedral, lower energy in tetrahedral e orbitals = Lower energy in tetrahedral t2 orbitals = Higher energy in tetrahedral</p> Signup and view all the answers

Flashcards

Octahedral Crystal Field Splitting

Ligands approach the metal ion along the axes in an octahedral crystal field. This causes a splitting of d-orbital energies, with the eg orbitals (dx2-y2, dz2) higher in energy than the t2g orbitals (dxy, dyz, dxz).

Tetrahedral Crystal Field Splitting

Ligands approach the metal ion diagonally in a tetrahedral crystal field. This causes a splitting of d-orbital energies, but with t2 orbitals lower in energy than e orbitals.

Crystal Field Splitting Energy (Δo)

The energy difference between the eg and t2g orbitals in an octahedral crystal field.

Crystal Field Splitting Energy (Δt)

The energy difference between the e and t2 orbitals in a tetrahedral crystal field.

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d-orbital splitting

The energy difference in the d-orbitals due to the presence of ligands in crystal field.

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