Structure of Atom – JEE Main Previous Year Questions (2014–2025)

All 7 JEE Main previous-year questions from Structure of Atom (Chemistry), 2014–2025, taken from 7 papers. Practise them together in one test with the official marking and answer key, then review every answer.

▶ Practise all 7 questionsAll JEE Main chapters

Structure of Atom questions by paper

Sample questions

• JEE Main 2025 22 Jan Shift 1
  Radius of the first excited state of Helium ion is given as ag radius of first stationary state of hydrogen atom Options 2 2 3 4 dag
• JEE Main 2025 22 Jan Shift 2
  Given below are two statements Statement A spectral line will be observed for a transition Statement II and are degenerate orbitals In the light of the above statements…
• JEE Main 2019 8 Apr Shift 1
  The quantum number of four electrons are given below Lo 4 1 2 2 3 1 2 1 4 1 0 3 1 1 1 The correct order of their increasing energies will be 1 2 3 IV II 1 4 Wweucm
• JEE Main 2019 9 Jan Shift 1
  For emission line of atomic hydrogen from 8 to the plot of wave number 1 against 4 will be The Rydberg constant is in wave number unit 1 Linear with intercept Ry 2…

Question text shown from the scanned paper; open the test to see each question exactly as printed.

More Chemistry chapters

• Some Basic Concepts of Chemistry 6
• Classification of Elements and Periodicity 7
• Chemical Bonding and Molecular Structure 9
• States of Matter 3
• Thermodynamics 11
• Equilibrium 12
• Redox Reactions 4
• Hydrogen 5
• s-Block Elements 4
• p-Block Elements 13
• Organic Chemistry: Basic Principles 12
• Hydrocarbons 11
• Environmental Chemistry 5
• Solid State 6
• Solutions 9
• Electrochemistry 11
• Chemical Kinetics 8
• Surface Chemistry 5
• General Principles of Isolation of Elements 4
• d- and f-Block Elements 6
• Coordination Compounds 15
• Haloalkanes and Haloarenes 10
• Alcohols, Phenols and Ethers 7
• Aldehydes, Ketones and Carboxylic Acids 10