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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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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC offline past questions - with all answers and explanations in one app - Download for free
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC offline past questions - with all answers and explanations in one app - Download for free
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995