Electronic configuration and orbitals Quiz
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5 questions, one answer each
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1. What is the electronic configuration of a chloride ion, Cl⁻ (Z = 17)?
- A. 1s²2s²2p⁶3s²3p⁵
- B. 1s²2s²2p⁶3s²3p⁴
- C. 1s²2s²2p⁶3s²3p⁶
- D. 1s²2s²2p⁶3s²3p⁶4s¹
2. How many electrons can a d sub-shell hold?
- A. 10
- B. 6
- C. 14
- D. 2
3. What is the electronic configuration of a copper atom (Z = 29)?
- A. [Ar]3d⁹4s²
- B. [Ar]3d¹⁰4s²
- C. [Ar]3d⁸4s²4p¹
- D. [Ar]3d¹⁰4s¹
4. How many unpaired electrons are in a nitrogen atom?
- A. 0
- B. 3
- C. 5
- D. 7
5. Which element is in the d block?
- A. Calcium
- B. Gallium
- C. Vanadium
- D. Selenium