NEET Chemistry Structure of Atom PYQ Analysis 2020–2026: Topic-wise Trends & Practice
Structure of Atom (NEET Chemistry): 13 questions in 2020–2026, 3.3% of the subject. Topic-wise trends, difficulty split, repeated topics and PYQ practice.
Edurack Team
October 13, 2026
Structure of Atom gave 13 of the 398 NEET Chemistry questions asked between 2020 and 2026 (Re-NEET 2026 included). That is 3.3% of the subject and the #15 chapter out of 31 by weightage, about 1.6 questions per paper. It peaked at 2 in NEET 2021.
Of the 13 questions tagged for difficulty, 31% were easy, 46% medium and 23% hard, so this is a fairly balanced mix of easy and moderate questions.
Its weight has stayed steady: 1.7 questions per paper in 2020–2022 and 1.7 across 2025, 2026 and Re-NEET 2026.
Year-wise questions from Structure of Atom
| Paper | Questions |
|---|---|
| NEET 2020 | 1 |
| NEET 2021 | 2 |
| NEET 2022 | 2 |
| NEET 2023 | 1 |
| NEET 2024 | 2 |
| NEET 2025 | 2 |
| NEET 2026 | 2 |
| Re-NEET 2026 | 1 |
Difficulty split
| Level | Questions | Share |
|---|---|---|
| Easy | 4 | 31% |
| Medium | 6 | 46% |
| Hard | 3 | 23% |
Topic-wise analysis
Every topic tagged under Structure of Atom, most-asked first. "Papers" is the number of the 8 papers in which the topic appeared.
| Topic | Total Qs | Easy | Medium | Hard | Papers | Asked in |
|---|---|---|---|---|---|---|
| Bohr's Model for Hydrogen Atom (Energy of Electron) | 2 | 0 | 1 | 1 | 2 | 2021 and 2024 |
| Bohr's Model for Hydrogen Atom (Radius of Shell) | 2 | 0 | 2 | 0 | 2 | 2022 and 2025 |
| Quantum Mechanical Model of the Atom (Concept of Orbitals) | 2 | 0 | 0 | 2 | 2 | 2022 and 2023 |
| Bohr's Model for Hydrogen Atom (Explanation of Line Spectrum of Hydrogen) | 1 | 0 | 1 | 0 | 1 | 2025 |
| Bohr's Model for Hydrogen Atom (Limitations of Bohr's Model) | 1 | 1 | 0 | 0 | 1 | 2020 |
| Isoelectronic Species | 1 | 1 | 0 | 0 | 1 | 2021 |
| Particle Nature of Electromagnetic Radiation: Planck’s Quantum (Planck’s Quantum Theory) | 1 | 1 | 0 | 0 | 1 | 2026 |
| Quantum Mechanical Model of the Atom (Quantum Number) | 1 | 0 | 1 | 0 | 1 | 2024 |
| Quantum Mechanical Model of the Atom (Radial and Angular Nodes) | 1 | 0 | 1 | 0 | 1 | Re-NEET 2026 |
| Quantum Number (Principal Quantum Number) | 1 | 1 | 0 | 0 | 1 | 2026 |
Which topics matter most
Most-tested topics
- Bohr's Model for Hydrogen Atom (Energy of Electron): 2 Qs
- Bohr's Model for Hydrogen Atom (Radius of Shell): 2 Qs
- Quantum Mechanical Model of the Atom (Concept of Orbitals): 2 Qs
- Bohr's Model for Hydrogen Atom (Explanation of Line Spectrum of Hydrogen): 1 Q
- Bohr's Model for Hydrogen Atom (Limitations of Bohr's Model): 1 Q
What the latest papers asked
Topics from NEET 2026 and Re-NEET 2026:
- Particle Nature of Electromagnetic Radiation: Planck’s Quantum (Planck’s Quantum Theory)
- Quantum Mechanical Model of the Atom (Radial and Angular Nodes)
- Quantum Number (Principal Quantum Number)
Where the hard questions came from
- Quantum Mechanical Model of the Atom (Concept of Orbitals): 2 hard of 2
- Bohr's Model for Hydrogen Atom (Energy of Electron): 1 hard of 2
How to use this data
- No single topic dominates here. The 10 topics are spread widely, with 7 asked only once, so cover the whole NCERT chapter rather than a short list.
- 23% were hard. After the basics, practise multi-step and application questions from the hard-tagged topics.
- Re-solve the 3 topics from NEET 2026 and Re-NEET 2026, since they show the current style of questions.
- Then attempt the chapter's past questions under a timer and note which topics cost you marks.
Practise Structure of Atom PYQs
Solve every Structure of Atom question from 2020–2026 with solutions on Edurack:
- Practise Structure of Atom PYQs
- See the full Structure of Atom blueprint page
- NEET Chemistry PYQ analysis: all chapters
Related chapters
- Solutions: #14 in Chemistry, 14 questions
- The p-Block Elements (XII): #16 in Chemistry, 12 questions
Frequently Asked Questions
How many questions came from Structure of Atom in NEET 2020–2026?
Structure of Atom contributed 13 NEET Chemistry questions across the 8 papers from 2020–2026, which is 3.3% of the subject.
Which topics of Structure of Atom are asked most often?
The most-tested topics are Bohr's Model for Hydrogen Atom (Energy of Electron): 2 Qs, Bohr's Model for Hydrogen Atom (Radius of Shell): 2 Qs and Quantum Mechanical Model of the Atom (Concept of Orbitals): 2 Qs.
Is Structure of Atom easy or difficult in NEET?
Of 13 difficulty-tagged questions, 31% were easy, 46% medium and 23% hard.
Was Structure of Atom asked in NEET 2026?
Yes. It had 2 questions in NEET 2026 and 1 question in Re-NEET 2026.