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In Crystal Field Theory, the 5 d-orbitals in an OCTAHEDRAL field split into:
AThree lower eg + two higher t2g levels
BThree lower t2g + two higher eg levels
CAll five d-orbitals at the same energy
DTwo lower t2g + three higher eg levels
Answer & Solution
Correct answer: B. Three lower t2g + two higher eg levels
Octahedral CFT splitting: t2g (3 orbitals: dxy, dyz, dxz) at LOWER energy + eg (2 orbitals: dx²-y², dz²) at HIGHER energy. Energy gap = Δ₀ (crystal field splitting). In tetrahedral, splitting is reversed.
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