The D And F Block Elements Ques 21

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

[2003]

(a) Variable oxidation states

(b) High enthalpy of atomization

(c) Parmagnetic behaviour

(d) Colour of hydrated ions

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Solution:

  1. (a) Transition metals have the ability to utilize $(n-1) d$-orbitals. Thus variable oxidation states enables the transition element to associate with the reactants in different forms.