JEE Main 2019 — Structure of Atom Question with Solution
JEE Main 2019 (12 Apr Shift 2)
Question
Among the following, the energy of orbital is lowest in:
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Potassium will have the least energy in its 2s orbital. This is due to the fact that the 2s orbital is closest to the nucleus in potassium because of its greater nuclear charge.
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This is a previous-year question from JEE Main 2019, covering the Structure of Atom chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.