Question

Discuss the factors affecting Crystal field Stabilization energy in complex compounds?

Answer 1

The factors on which crystal field stabilization energy (CFSE) depends are:-

1. The geometry of the complexes - The order in which the CFSE increases on the basis of the geometry of the complexes is as follows is:           tetradedral < octahedral < square planner
2. Nature of the lig-and - if the lig-and approaching is weak in nature then the energy gap is small due to less splitting of the d-orbital. When the lig-and is strong, the reverse action takes place
3. Nature of the metal cation - in case of different charges on the cation is present for the same metal then the one with the higher charge polarizes the lig-and
4. Quantum number - The gap energy is high if the quantum number of the central ion is high.

Answer 2

Crystal field stabilisation energy (CFSE) is influenced by the following factors:

The geometry of the complexes - The following is the order in which the CFSE grows based on the geometry of the complexes: square planner tetradedral octahedral tetradedral octahedral tetradedral octahedral te

The nature of the ligand approaching - if the ligand approaching is weak, the energy gap is tiny because the d-orbital splits less. When the ligand is strong, the activity is reversible.

The nature of the metal cation - if the same metal has many charges on the cation, the one with the higher charge polarises the light.

Quantum number - If the quantum number of the centre ion is large, the gap energy is large.

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