alleryIn Valence Bond Theory, an octahedral LOW-SPIN complex like [Co(NH3)6]³⁺ uses which hybridisation?
Asp³d² (outer orbital, high spin)
Bdsp² (square planar)
Cd²sp³ (inner orbital, low spin)
Dsp³ (tetrahedral)
Answer & Solution
Correct answer: C. d²sp³ (inner orbital, low spin)
Low-spin octahedral = d²sp³ (uses 3d² + 4s + 4p³ orbitals; INNER ORBITAL complex).
High-spin octahedral = sp³d² (uses 4s + 4p³ + 4d²; outer orbital).
dsp² is square planar (Ni²⁺ in 4-coordinate).
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