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5-3. Transition Elements
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Total cards: 1•Content version: v4•Public deck•Updated: 8/1/2026
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#1
Front (Question)
Explain why two of the period 4 d block elements Zinc and Scandium are not transition metals.
Back (Answer)
(Transition element) has an ion with an incomplete/partiallyfilled d sub-shell/d-orbital Scandium/Sc and zinc/Zn are not transition elements Electron configurations of ions Sc3+ AND 1s2 2s2 2p6 3s2 3p6 Zn2+ AND 1s2 2s2 2p6 3s2 3p6 3d10 Sc3+ AND d sub-shell empty / d orbital(s) empty Note: Sc3+ must be the ONLY scandium ion shown for this mark Zn2+ AND d sub-shell full /ALL d-orbitals full