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Chemistry

Chapter 1 - Transition Elements and Iron Metallurgy

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Quiz

Lesson 1 Quiz: First Transition Series, Electronic Configurations and Economic Significance

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1.
Why is Zinc (30Zn) not considered a transition element according to ministerial IUPAC definition?
It does not conduct electricity
It forms colored ionic complexes in aqueous solutions
It only has one radioactive isotope
Its 3d sublevel is completely filled in both atomic state and +2 oxidation state
2.
What is the exact chemical deduction according to Egyptian curriculum standards for: Electronic Configuration of the First Transition Series?
Scandium (Sc: 21) exhibits stable oxidation states of +1, +2, and +3
Zinc (Zn: 30) is considered a typical transition element in all its compounds
Both Chromium and Copper have fully filled 4s2 orbitals
Chromium (Cr: 24) has an anomalous configuration [Ar] 4s1 3d5 to achieve half-filled d-subshell stability, and Copper (Cu: 29) is [Ar] 4s1 3d10 for completely filled d-subshell stability
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