JAMB Chemistry 2023 Objective — Question 28
Question 28 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2023 Objective paper, with the correct answer and a full explanation.
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How many unpaired electrons are in the p-orbitals of an oxygen atom?
- A. 0
- B. 1
- C. 2Correct
- D. 3
Explanation
O (Z=8): 1s²2s²2p⁴. The 2p subshell has 4 electrons: 2px↑↓, 2py↑, 2pz↑. There are 2 unpaired electrons.
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