Crystal Field Stabilization Energy (CFSE) 2: High-Spin Example

The video tutorial explains how to calculate crystal field stabilization energy using the example of hexa-aqua iron III. It covers determining the charge on iron, calculating the number of d-orbital electrons, and using a flow chart to identify high spin configurations. The tutorial concludes with setting up a crystal field diagram and calculating the stabilization energy, emphasizing the importance of understanding electron configurations and ligand strength.

What is the charge on iron in the hexa-aqua iron III complex?

• +1

• 0

• +3

• +2

How many d-orbital electrons does iron have in the hexa-aqua iron III complex?

• 6

• 5

• 4

• 3

Which of the following is NOT a strong field ligand?

• Cyanide

• Carbon monoxide

• Triphenyl phosphine

• Water

What determines if a complex is high spin or low spin?

• The number of d electrons

• The type of ligands

• The atomic number of the metal

• The temperature

In a high spin complex, how are the eg and t2g orbitals positioned in terms of energy?

• Inverted

• Far apart

• Close together

• At the same energy level

What is the crystal field stabilization energy for the hexa-aqua iron III complex?

• 0

• 1/5 delta octahedral

• 2/5 delta octahedral

• 3/5 delta octahedral

What is the significance of pairing energy in high spin complexes?

• It is used only in low spin complexes

• It is sometimes used

• It is never used

• It is always used