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← ScienceWhich outcome lowers catalytic efficiency when a catalyst's d-orbitals become blocked?
A)Reductive elimination cannot occur✓
B)Increased substrate binding affinity
C)Faster oxidative addition reactions
D)Ligand dissociation accelerates
💡 Explanation
If d-orbitals are blocked, oxidative addition or other d-orbital mediated steps cannot occur, stopping reductive elimination because the required electron transfer is hindered. Consequently, catalytic efficiency reduces rather than increasing it because of other factors.
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