Question : Which theory discusses the relationship between ligand bonding and degradation of d orbitals in metal complexes and the geometry of metal complexes and the splitting of d orbitals?
Option 1: Crystal field theory (CFT)
Option 2: Ligand field theory (LFT)
Option 3: Valence bond theory (VBT)
Option 4: Molecular orbital theory (MOT)
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Correct Answer: Crystal field theory (CFT)
Solution : The correct option is Crystal field theory (CFT).
Crystal field theory (CFT) determines how the arrangement of ligands around a metal ion influences the energy levels of its d orbitals, leading to the splitting of these orbitals into different energy states. This energy splitting is responsible for many of the observed properties of metal complexes, such as their colour, magnetic behaviour, and reactivity. The geometry of the complex is a crucial factor in determining the magnitude and pattern of this orbital splitting in CFT.
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