NEET 2013 Chemistry Transition Elements MCQ Question
Sc (Z = 21) is a transition element but Zn (Z = 30) is not because
both Sc³⁺ and Zn²⁺ ions are colourless and form white compounds
in case of Sc, 3d orbitals are partially filled but in Zn these are filled
last electron is assumed to be added to 4s level in case of Zn
both Sc and Zn do not exhibit variable oxidation states
Correct Answer
Detailed Explanation
Scandium has partially filled d-orbitals, making it a transition element, whereas zinc has fully filled d-orbitals.
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