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Question

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

A
High enthalpy of atomization
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B
Paramagnetic behaviour
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C
Colour of hydrated ions
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D
Variable oxidation states
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Solution

The correct option is D Variable oxidation states
The transition elements, on account of their variable valency, are able to form unstable intermediate compounds very readily and hence show catalytic behaviour.

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