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The d- and f-Block Elements — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryThe d- and f-Block Elements1 Mark
Question
Explain giving reason :
Transition metals and their many compounds act as good catalyst.
✓

Answer

Transition metals and many of their compounds are good catalyst because they have variable valency (oxidation number) and the property of forming complex compounds in which unpaired electrons are used.

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