MCQ
The $d$-block elements consists mostly of
  • A
    Monovalent metals
  • B
    All non-metals
  • C
    Elements which generally form stoichiometric metal oxide
  • Many metals with catalytic properties

Answer

Correct option: D.
Many metals with catalytic properties
d
(d)Many metals with catalytic properties because

(i) They provide surface area for reaction to occur

(ii) They decreases the ionisation energy.

(iii) They have vacant $d$-orbitals.

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