Classification of Elements and Periodicity
117 JEE Mains Chemistry previous year questions (PYQs) from 71 papers, 2021 to 2026, with answers and worked solutions.
About this chapter
- Most-asked subtopics: Ionization Enthalpy (27), Atomic and Ionic Radii (21), Nature of Oxides and Group 14 Trends (20).
- Updated 6 August 2026.
#1Periodic Law, Blocks and Position in the Table
#2Periodic Law, Blocks and Position in the Table
#3Periodic Law, Blocks and Position in the Table
#4Periodic Law, Blocks and Position in the Table
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#6Periodic Law, Blocks and Position in the Table
#7Periodic Law, Blocks and Position in the Table
#8Periodic Law, Blocks and Position in the Table
#9Periodic Law, Blocks and Position in the Table
#10Periodic Law, Blocks and Position in the Table
#11Periodic Law, Blocks and Position in the Table
#12Periodic Law, Blocks and Position in the Table
#13Periodic Law, Blocks and Position in the Table
#14Periodic Law, Blocks and Position in the Table
#15Atomic and Ionic Radii
#16Atomic and Ionic Radii
#17Atomic and Ionic Radii
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#20Atomic and Ionic Radii
#21Atomic and Ionic Radii
#22Atomic and Ionic Radii
#23Atomic and Ionic Radii
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#27Atomic and Ionic Radii
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#30Atomic and Ionic Radii
#31Atomic and Ionic Radii
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#34Atomic and Ionic Radii
#35Atomic and Ionic Radii
#36Ionization Enthalpy
#37Ionization Enthalpy
#38Ionization Enthalpy
#39Ionization Enthalpy
#40Ionization Enthalpy
#41Ionization Enthalpy
#42Ionization Enthalpy
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#50Ionization Enthalpy
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- Alcohols, Phenols and Ethers102
- Aldehydes, Ketones and Carboxylic Acids165
- Amines160
- Biomolecules135
- Chemical Bonding and Molecular Structure176
- Chemical Kinetics126
- Chemical Thermodynamics128
- Chemistry in Everyday Life49
- Coordination Compounds215
- Electrochemistry125
- Environmental Chemistry65
- Equilibrium131
- General Principles and Processes of Isolation of Elements74
- Haloalkanes and Haloarenes92
- Hydrocarbons165
- Hydrogen64
- Organic Chemistry - Some Basic Principles and Techniques243
- Organic Reaction Mechanisms48
- Polymers46
- Solid State33
- Solutions110
- Some Basic Concepts of Chemistry205
- Structure of Atom130
- Surface Chemistry64
- The d- and f-Block Elements214
- The p-Block Elements185
- The s-Block Elements88