252 JEE Main Structure of Atom PYQs (2002–2026) with verified answers and step-by-step solutions.
This page collects every JEE Main Structure of Atom previous-year question from Chemistry, 2002–2026. Each links to a full solution with a verified answer key. Click any year above to narrow the list, or open a question to study its step-by-step working and then practice it on PrepSharp's CBT player.
The wave numbers of three spectral lines of H atom are considered. Identify the set of spectral lines belonging to Balm…
Given, (A) n=5, ~m₁=-1 (B) n=3, l=2, ~m₁=-1, ~ms=+(1)/(2) The maximum number of electron(s) in an atom that can have th…
The wavelength of spectral line obtained in the spectrum of Li²⁺ ion, when the transition takes place between two level…
Which of the following point in Figure 2 most accurately represents the nodal surface as shown in Figure 1?
Identify the correct statements from the following: A. Heisenberg uncertainty principle is applicable to electrons. B.…
The wavelength of photon ' A ' is 400 nm. The frequency of photon ' B ' is 10¹⁶ ~s⁻¹. The wave number of photon ' Cⁱme…
Which of the following statements regarding the energy of the stationary state is true in the following one - electron…
Which of the following statement(s) is/are true ? A. If two orbitals have the same value of (n + l), the orbital with l…
Consider two radiations of wavelengths 1. λ₁ = 2000 Å 2. λ₂ = 6000 Å The ratio of the energies of these two radiations…
The surface of sodium metal is irradiated with radiation of wavelength x nm. The kinetic energy of ejected electrons is…
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