Transition elements and their compounds are commonly used as catalysts due to _.
Correct answer: D. Variable oxidation state
- A. Involvement of inner d-orbitals
- B. Due to the presence of unpaired electrons
- C. d-d transition of electrons
- D. Variable oxidation state
- E. Suitable surface area
Explanation
Transition metals and their compounds act as catalysts because their electronic configurations are variable that enables them to temporarily exchange electrons with reacting species.
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About Electronic Structure of d-Block Elements
The electronic structure of d-block elements covers the filling of the (n-1)d and ns orbitals, general electronic configurations, and the exceptions shown by chromium and copper. It explains how partially filled d orbitals produce variable oxidation states, coloured ions, magnetic behaviour and complex formation, while distinguishing transition elements from elements with completely filled d subshells.
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