MCQ
Transition metals make the most efficient catalysts because of their ability to:
- ✓Adopt multiple oxidation states and to form complexes.
- BForm coloured ions.
- CShow paramagnetism due to unpaired electrons.
- DForm a large number of oxides.
✓
Answer
Correct option: A.
Adopt multiple oxidation states and to form complexes.
Transition metals have partially filled $d-$ orbitals so they can easily withdraw the electrons from the reagents or give electrons to them depending on the nature of the reaction. They also have a tendency to show large no. of oxidation states and the ability to form complexes which makes them a good catalyst.
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