JAMB Chemistry 2019 Objective — Question 19
Question 19 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2019 Objective paper, with the correct answer and a full explanation.
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Zinc is not regarded as a transition metal even though it is a d-block element because
- A. it has no electron in 3d-orbitals
- B. it has all 3d-orbitals completely filledCorrect
- C. it blends with other neighboring elements
- D. metallic zinc has a white colour
Explanation
Zinc (Zn: 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²) is not regarded as a transition element, despite being a d-block element, because its 3d-orbitals are completely filled, unlike other elements in the d-block.
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