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Which of the following arrangements represents the correct order of electronic energy level?

Chemistry
WAEC 2013

Which of the following arrangements represents the correct order of electronic energy level?

  • A. 1s 2p 2s 3p 3s 3d 4s
  • B. 1s 2s 2p 3s 3p 3d 4s
  • C. 1s 2s 2p 3s 3p 4s 3d
  • D. 1s 2s 3s 2p 3p 4s 3d
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Correct Answer: Option C
Explanation

the correct order of electronic energy level is OPTION C according to the Aufbau principle.

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