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← ScienceWhich consequence results when metallic catalyst d-orbital occupancy is incomplete?
A)Reduced activation energy barrier
B)Increased product binding affinity
C)Poisoning by spectator ligands
D)Decreased catalytic turnover rate✓
💡 Explanation
Incomplete d-orbital occupancy impedes reactant chemisorption because it affects the catalyst surface's ability to form effective orbital overlap for surface-mediated bond cleavage, which leads to lower rate rather than higher. Complete occupancy would have facilitated interaction therefore a higher rate.
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