Question

Why are transition elements good catalysts?

Hint:

Transition metals are good catalysts due to their variable oxidation states, ability to form complexes, and partially filled d-orbitals that facilitate reaction mechanisms.

Answer 1

Transition elements are good catalysts due to several reasons:
1. Variable oxidation states: Transition metals can easily change oxidation states, which helps in facilitating redox reactions by acting as both electron donors and acceptors.
2. Ability to form complexes: Transition metals can coordinate with various ligands, forming complexes that are essential intermediates in catalytic processes.
3. Partial filling of d-orbitals: The presence of partially filled d-orbitals allows transition metals to interact with reactant molecules, lowering activation energies.
4. Surface area: Many transition metals have high surface area, providing more active sites for reactions to occur. These factors combined make transition metals effective in speeding up reactions without being consumed in the process.
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