JEE Main 2019ChemistryStructure of AtomMediumMCQ

JEE Main 2019Structure of Atom Question with Solution

JEE Main 2019 (10 Jan Shift 2)

Question

The ground state energy of a hydrogen atom is -13.6 eV. The energy of second excited state of He+ ion in eV is:

Choose an option

Show full solutionCorrect option: B
Correct answer
B-6.04

Step-by-step explanation

E=-13.6z2n2=-13.62232=-6.04 eV

(Second exited state=Third shell, n=3)

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About this question

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.