Q46 · CSIR-NET Chemistry, December 2011
Paper: CSIR-NET December 2011 · Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Molecular Orbital Ligand Field · Marks: 2 · Difficulty: Hard
The correct order of d-orbital splitting in a trigonal bipyramidal geometry is:
(a)$\mathrm{d}_{\mathrm{z}^{2}}>\mathrm{d}_{\mathrm{xz}}>\mathrm{d}_{\mathrm{x}^{2}-\mathrm{y}^{2}}, \mathrm{d}_{\mathrm{xy}}$
(b)$\mathrm{d}_{\mathrm{xz}}, \mathrm{d}_{\mathrm{yz}}>\mathrm{d}_{\mathrm{x}^{2}-\mathrm{y}^{2}}, \mathrm{d}_{\mathrm{xy}}>\mathrm{d}_{\mathrm{z}^{2}}$
(c)$\mathrm{d}_{\mathrm{x}^{2}-\mathrm{y}^{2}}, \mathrm{d}_{\mathrm{xy}}>\mathrm{d}_{\mathrm{z}^{2}}>\mathrm{d}_{\mathrm{xz}}, \mathrm{d}_{\mathrm{yz}}$
(d)$\mathrm{d}_{\mathrm{z}^{2}}>\mathrm{d}_{\mathrm{x}^{2}-\mathrm{y}^{2}}>\mathrm{d}_{\mathrm{xy}}>\mathrm{d}_{\mathrm{xz}}, \mathrm{d}_{\mathrm{yz}}$
Answer
Answer: D ✓ checked by 4AB · confidence medium
Explanation
Trigonal bipyramid: dz² highest, then (dx²−y², dxy), then (dxz, dyz) (d).
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