The transition element which does not show variable valency is:
Correct answer: C. Zn
- A. Cu
- B. Sc
- C. Zn
- D. Cr
Explanation
Zn has its d orbital completely filled thus it cannot be called a transition element and cannot possess the properties shown by the transition elements. Hence, it does not show variable valency.
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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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