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← ScienceWhich outcome arises when a p-orbital containing unpaired electrons approaches near a transition metal complex?
A)Ligand field splitting occurs✓
B)Intersystem crossing probability increases
C)Spin-orbital coupling becomes negligible
D)Phosphorescence lifetime decreases instantly
💡 Explanation
Ligand field splitting occurs because the proximity of p-orbitals perturbs the d-orbital energies of the transition metal, altering d-orbital occupancy; therefore ligand field splitting is expected rather than intersystem crossing, because that relies on heavy atom effect under spin-orbit coupling.
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