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.
This question appeared on the PMC National MDCAT 2020 paper, which you can sit online with every answer explained.
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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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531 free Transition Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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