10 Questions
What causes the splitting of the d-orbitals in a complex due to the ligand field?
Unequal effect of ligands on different d-orbitals
In an Oh complex, which orbitals point directly at the ligands along the axes, causing more repulsion?
dx2-y2 and dz2
Which type of ligands cause only a small degree of splitting of d-orbitals in a complex?
F- and OH-
What is the term for the preferential filling of the lower lying d-levels in an octahedral complex?
Crystal field stabilization energy
How does the crystal field stabilization energy (CFSE) change as the splitting ability of ligands decreases?
Increases
According to Crystal Field Theory (CFT), how are the five d-orbitals described?
They are degenerate but not identical, with three forming the t2g orbital and two forming the eg orbital
How does Crystal Field Theory (CFT) differ from Valence Bond Theory (VBT) in terms of the metal-ligand bonding?
CFT assumes a purely ionic bond, neglecting covalent bonding, while VBT considers the bond between metal and ligand as covalent
According to Crystal Field Theory (CFT), how does it view the surrounding ligand ions like F- and Cl-?
As point charges creating an electrostatic attraction with the central positive ion
What is the basis of M-L bonding according to Crystal Field Theory (CFT)?
Purely ionic or electrostatic
Why do the energy levels of d-orbitals raise in Crystal Field Theory (CFT) when a spherically symmetrical field of negative charge is placed around the metal ion?
Due to repulsion between the negative field and electrons of the d-orbitals
Test your knowledge about the differences between Crystal Field Theory and Ligand Field Theory and their ability to explain spectral, thermodynamic, and kinetic properties of complexes. Learn about the degenerate d-orbitals, t2g and eg orbitals, and the physicists behind the development of these theories.
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