When 6 Ligands Approach a Central Metal Atom Along the X-,Y-

question 32

Multiple Choice

When 6 ligands approach a central metal atom along the x-,y- and z-axes,they will cause the d orbitals to split in energy.The $\mathrm{d}_{{x^{2}}-y^{2}}$ and the $\mathrm{d}_{z^2}$ orbitals are most affected because

• A) the electron density in these orbitals is squared.
• B) unlike the other d orbitals,these orbitals contain unpaired electrons and absorb the energy of light more readily,compared to the other three d orbitals.
• C) unlike the other d orbitals,these orbitals each contain a pair of electrons.
• D) they have the highest electron density along the x-,y-,and z-axes,and thus feel the greatest repulsion from the ligands' unpaired electrons.
• E) the shape of these orbitals is similar to that of the ligands' orbitals.

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