Class 11 · Chemistry

Structure of Atom

29 topics — from Introduction through Nodal Plane: 2. Expect about 1 question in NEET — roughly 4 of 720 marks.

Updated 25 Aug 2026 29 topics Chemistry · Class 11
In short

Structure of Atom is a Class 11 Chemistry chapter covering 29 topics. Expect about 1 question in NEET — roughly 4 of 720 marks.

29
Topics
In this chapter
1
Expected question
≈ 4 of 720 marks
11
Class
Chemistry
97
Chapters in the syllabus
32 in Chemistry

Topics covered #

29 topics, in teaching order.

  1. Introduction
  2. Atomic Number
  3. Isotopes, Isobars and Isotones
  4. Isodiaphere
  5. Planck's Theory
  6. Photoelectric Effect
  7. Dual Nature of Radiation
  8. Solved Examples
  9. Electromagnetic Radiation
  10. Electronic Configuration
  11. Exceptional Electronic Configuration
  12. Quantum Number (n & I)
  13. Quantum Number (m & s)
  14. Problems on Quantum Number (I)
  15. Problems on Quantum Number (II)
  16. Problems on Quantum Number (III)
  17. Pauli Exclusion principle, Hund's Rule & Bohr Blurry rule
  18. Heisenberg's uncertainity principle
  19. Spectrum
  20. Bohr's Theory (I)
  21. Bohr's Theory (II)
  22. Bohr's Theory (III)
  23. Limitations of Bohr's Theory
  24. Discovery of Electron
  25. Rutherford's Experiment
  26. Hydrogen Spectra
  27. Solved Problems: Hydrogen Spectra
  28. Nodal Plane: 1
  29. Nodal Plane: 2

Weightage #

Expect about 1 question in NEET — roughly 4 of 720 marks.

1 of 180 questions · 4 of 720 marks
This chapter's share of the paper. Weightage is indicative — it reflects how many questions have typically come from here, not a guarantee for any single year.

Practise this chapter #

Reading it once is not the same as being able to answer it under time.

Practice questionsChapter-wise MCQs with solutions Video lecturesTopic-by-topic walkthroughs Chapter testExam-format, timed NEET previous-year questionsPast questions from this chapter AIIMS previous-year questionsOlder AIIMS papers, same syllabus

Next in Chemistry

← PreviousSome Basic Concepts Of Chemistry

Frequently asked #

How many questions come from Structure of Atom in NEET?
About 1 question — roughly 4 of the 720 marks available. It is a Class 11 Chemistry chapter.
What topics does this chapter cover?
29 topics — from Introduction through Nodal Plane: 2. The full list is above.
Where can I practise Structure of Atom?
Chapter-wise MCQs, video lectures, a timed chapter test, and both NEET and AIIMS previous-year questions — all linked above.