NEET UG · Chemistry · Structure of Atom
Atomic Number, Mass Number and Particle Counts
NEET asked Atomic Number, Mass Number and Particle Counts once in 2017–2026, in 2020. It belongs to Quantum Numbers, in Structure of Atom (Chemistry).
Updated 2026-10-08
- Times asked
- 1
- in 2017–2026
- Papers
- 1
- of 10
- First asked
- 2020
- the only time
- Chance next paper
- 4%
- calibrated historical rate
Questions on this idea, by paper
2017–2026. 2020.
How NEET framed it
One-line MCQ is the usual form. Skill tested: recall.
- Numerical
Chance asked next paper 4%
Every question
The question
From the official NEET UG papers, newest first. Open one for the full question, the options and the official answer.
Papers: NEET 2020.
Same topic
Other ideas in Quantum Numbers
Quantum Numbers has 13 ideas NEET has asked; 2 of them came up in more than one question.
- Single-Electron Species Energy Exception3× · 2025
- Orbital Degeneracy2× · 2022
- Graphical Identification of Radial Nodesonce · 2026
- Azimuthal Quantum Number (l)once · 2024
- Fundamental Particles and Early Atomic Modelsonce · 2023
- Magnetic Quantum Number (ml)once · 2023
- Bohr Orbit Radiusonce · 2022
- Isoelectronic Species Configurationsonce · 2021
- Wave Nature of Electromagnetic Radiationonce · 2021
- Hydrogen Spectral Seriesonce · 2019
- The (n+l) Ruleonce · 2019
- Electronic Filling Rulesonce · 2018