JEE Main 2002 — Structure Of Atom Question with Solution
From: AIEEE 2002
Question
In a hydrogen atom, if energy of an electron in ground state is -13.6 eV, then that in the 2nd excited state is
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Show full solutionCorrect option: A
Correct answer
A-1.51 eV
Step-by-step explanation
n = 1 means ground state
n = 2 means 1st excited state
n = 3 means 2nd excited state
Remember: nth excited state means n = n + 1
We know energy of an atom is given by
Energy (E) = -13.6
= -13.6 [ Z = atomic number = 1 for hydrogen atom]
= -1.51 ev
n = 2 means 1st excited state
n = 3 means 2nd excited state
Remember: nth excited state means n = n + 1
We know energy of an atom is given by
Energy (E) = -13.6
= -13.6 [ Z = atomic number = 1 for hydrogen atom]
= -1.51 ev
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This is a previous-year question from JEE Main 2002, 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.