Question

Why 4d and 5d metals show better catalytic activity than 3d metals?

Answer 1

Answer:

Explanation:

4d/5d metals often have stronger metal–lig_and interactions than analogous 3d complexes, resulting larger d-orbital splitting.

The metal centers in the 4d/5d catalysts are thus more likely to have higher energy unfilled d-orbitals and therefore more difficult to reduce.

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