📅 Published on: 23.12.2025
Classification of Elements and Periodicity JEE Main PYQs
The chapter Classification of Elements and Periodicity is one of the most scoring topics in JEE Main Chemistry. Every year, 2–3 questions are asked directly from periodic trends, electronic configuration, and block classification.
Modern Periodic Table (JEE Focus)
- Elements arranged in increasing atomic number
- 7 periods and 18 groups
- Divided into s, p, d, and f blocks
Important Periodic Trends (PYQs)
- Atomic Radius: Decreases across a period, increases down a group
- Ionization Energy: Increases across a period, decreases down a group
- Electron Gain Enthalpy: More negative across a period
- Electronegativity: Increases across a period
Most Asked PYQ Concepts
- Order of atomic/ionic radii
- Ionization energy exceptions (Be > B, N > O)
- Isoelectronic species comparison
- Block identification from electronic configuration
Quick JEE Tips
- Memorize trend directions, not values
- Revise all exceptions
- Practice last 10–15 years PYQs
Conclusion: With clear concepts and PYQ practice, this chapter can give 100% accuracy in JEE Main Chemistry.
Best Strategy for JEE Main Preparation
- Read NCERT line by line
- Make a one-page trend summary sheet
- Practice PYQs chapter-wise
- Attempt mock tests with time limit
⏱ Most questions from this chapter can be solved in 30–40 seconds if concepts are clear.
Conclusion
The chapter Classification of Elements and Periodicity is a high-return, low-effort unit for JEE Main aspirants. With strong conceptual understanding and regular PYQ practice, students can easily score 100% accuracy from this topic.
Master the trends, understand the logic behind periodicity, and revise all exceptions — this chapter can become one of your strongest areas in Physical Chemistry.
