The variable oxidation states of transition elements is attributed to the involvement of ns as well as:
Correct answer: A. Unpaired d Electrons
- A. Unpaired d Electrons
- B. Unpaired p electrons
- C. Unpaired f electrons
- D. Paired up d electrons
Explanation
Transition elements exhibit variable oxidation states due to the involvement of their ns and (n-1) d electrons. The unpaired d electrons can participate in bonding through their ability to be removed or shared, leading to different oxidation states. In contrast, unpaired p and f electrons are not significant in this context. Paired d electrons are stable and do not contribute to the variability in oxidation states.
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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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