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(D) Transition metals and their compounds are known for their catalytic activity. This is primarily due to their ability to adopt multiple oxidation s

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Variable oxidation states

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(D) Transition metals and their compounds are known for their catalytic activity. This is primarily due to their ability to adopt multiple oxidation states and to form complexes. By exhibiting variable oxidation states,transition metals can form unstable intermediate compounds and provide a new path with lower activation energy for the reaction. Thus,the variable oxidation states are the key characteristic associated with their catalytic activity.

Which one of the following characteristics of the transition metals is associated with their catalytic activity?

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