Label the element in the first series of outer transition elements that has highest binding energy.
Correct answer: C. Chromium
- A. Titanium
- B. Vanadium
- C. Chromium
- D. Manganese
Explanation
When we move from left to right in the 3d series, the number of unpaired electrons increases upto V-B (vanadium) and VI-B (Chromium). After chromium, pairing of electron starts. Since chromium has the maximum number of unpaired electrons in its neutral state so it has the maximum binding energy.
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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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