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ChemistryClassification of Elements and Periodicity

Class 11ChemistryChapter 35 marksModerate

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Chemistry · Class 11Classification of Elements and PeriodicityVideo coming soonRead the notes instead

Modern Periodic Law, Periodic Trends, Ionisation Enthalpy and the board questions built on them — roughly 5 marks of the paper.

What this chapter covers

  1. 1Modern Periodic Law
  2. 2Periodic Trends
  3. 3Ionisation Enthalpy
  4. 4Electronegativity

These lessons are being recorded. The written notes for this chapter are free to download now.

Learning resources

In the notes

Topics covered

  1. 01Modern Periodic Law18:24
  2. 02Periodic Trends32:09
  3. 03Ionisation Enthalpy26:15
  4. 04Electronegativity30:53

After this chapter you can

  • Explain modern periodic law without reading from the book
  • Present periodic trends in the format the marking scheme rewards
  • Attempt every previous year question set on this chapter
Marks
5
PYQs
21
Video
1h 48m

Then do the work

Practice

Important questions
21
Board questions
27
Numericals & applications
25
Open practice set

Revise

  • One-shot revision, 27 minutes
  • Formula sheet for this chapter
  • Printable summary, 2 pages
Revision material

Prepare

Board appearances of Classification of Elements and Periodicity by year
YearAsked asMarks
2025Case based4
2024Short answer6
2023Long answer6
2022MCQ set2
2021Case based2
All PYQs

    Follow the Seedha path

    Target 95+ in Chemistry

    Padho, Likho, Revise and Marks Laao. Chapter 3 of 9 — keep going while the format is fresh.