NEET-UG and JEE Main Chemistry · Class 11
Atomic Structure — NEET-UG and JEE Main Questions and Mock Test
Atomic Structure is a Class 11 Chemistry chapter of the NEET-UG and JEE Main syllabus, covering 8 topics. TestBudy holds 221 published questions from Atomic Structure, spread across 8 of those topics, each marked exactly as the real paper marks it.
- questions
- 221
- topics
- 8
- ncert class
- 11
Five free tests with an account. The length follows what the chapter holds.
Topics in Atomic Structure
Every topic of Atomic Structure, ordered by how many published questions sit behind it. A topic with none is listed rather than hidden — it is part of the chapter either way.
- Quantum mechanical model; orbitals, quantum numbers and orbital shapes
- Bohr model - postulates, electron energy and limitations
- Electromagnetic radiation and the photoelectric effect
- Spectrum of the hydrogen atom
- Electronic configuration; stability of half-filled and filled orbitals
- Dual nature of matter; de Broglie relation; uncertainty principle
- Sub-atomic particles; Thomson and Rutherford models
- Aufbau principle, Pauli exclusion principle and Hund's rule
Atomic Structure weightage in NEET-UG 2026 and JEE Main 2026
These shares are measured across many years of past papers, so they describe the long run rather than predicting any single paper.
| Paper | Share of Chemistry | Typical questions | Typical marks |
|---|---|---|---|
| NEET-UG 2026 chapter-wise weightage | 4.8% | 2.1 | 8.6 |
| JEE Main 2026 chapter-wise weightage | 4.8% | 1.2 | 4.8 |
Previous year questions from Atomic Structure
Past-paper questions are the most trustworthy material in the bank, and assembly reaches for them first when it builds a Atomic Structure test. They are not listed separately here, because a question's value is that you meet it under a clock rather than that you read it in a list.
A Atomic Structure test draws from all 221 published questions in this chapter, past papers first. Sit one now and see the per-topic breakdown.
More Chemistry chapters
Other chapters of the NEET-UG and JEE Main Chemistry syllabus, with the practice behind each.