A) monovalent metals
B) all non-metals
C) elements which generally form stoichiometric metal oxide
D) many metals with catalytic properties
Correct Answer: D
Solution :
Characteristics of \[d-\]block elements (a) The atomic radii of the d-block elements lie in between those of \[s-\] and \[p-\]block elements. (b) All \[d-\]block elements are metal. (c) \[d-\]block element shows variable valencies. (d) Most of the compound of \[d-\]block elements are coloured. (e) \[d-\]block elements forms complex compounds. (f) \[d-\]block elements are good catalyst.
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