Catalytic Property
Transition metals often act as catalysts because they:
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About This Question
- Subject
- chemistry
- Chapter
- d- and f-block elements
- Topic
- catalytic property
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Provide variable oxidation states and adsorption sites
- Variable Oxidation States: Because transition metals can easily shift between oxidation states (e.g.,Fe2+/Fe3+), they can facilitate redox reactions by acting as electron transfer agents.
- Unoccupied d-orbitals: The presence of empty or partially filled d-orbitals allows them to coordinate with reaction intermediates, lowering the activation energy.
- Surface Area (Adsorption): Metals like Nickel (Ni) and Platinum (Pt) provide a large surface area for adsorption. This increases the concentration of reactants on the catalyst surface and weakens their internal bonds.
- Examples: Iron in the Haber process, V2O5 in the Contact process.
This easy difficulty chemistry question is from the chapter d- and f-block elements, covering the topic of catalytic property. It appeared in the 2025 exam.
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