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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