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Chemistry - Structure of Atom

Practise 99 NTA Abhyas (JEE Main) questions on Structure of Atom. Each question shows a quick preview so you can jump straight to the topic you want to revise.

Structure of Atom has been asked in 0 of the 25 years of NTA Abhyas (JEE Main) papers analysed (2002–2026), with 99 questions in all. 100% of them were easy, 0% moderate and 0% tough. Most of its questions came from 2026, with 0 questions that year. In the last three years (2024–2026) it had 0 questions across 49 papers, about 0 per paper.

All of the chapter's questions come from a single topic, Uncategorized.

  1. 1When spectral lines are passed through magnetic field, splitting is observed. This effect is known as
  2. 2The atomic structure of H e + arises due to transition from n 2 to n 1 level. If n 1 + n 2 is 3 and n 2 - n 1 is 1. Find the λ in nm of tran
  3. 3The energy of an electron in the first orbit of H - atom is - 13.6 e V . The possible energy values of the excited state for electrons in Bo
  4. 4A light of wavelength 3000 A o falls on a metal surface. Ejected e - is further accelerated by a potential difference of 2 V , then final K.
  5. 5Ferrous ion changes to X ion on reacting with acidified hydrogen peroxide. The number of d-electrons present in X and its magnetic moment (i
  6. 6If in 4f the number of radial nodes and angular nodes are X and Y respectively. Find the sum of X + Y?
  7. 7The atomic masses of He and Ne are 4 and 20 a.m.u, respectively. The value of the de Broglie wavelength of He gas at − 73 o C is "M" times t
  8. 8Number of electrons having l + m = 0 in Mn (z = 25) is
  9. 9Number of photons having wavelength 632 .8 nm, emitted by 5 mW laser source in 1 second is
  10. 10Bond dissociation on energy of C l 2 is 240 k J / m o l . The longest wavelength of photon that can break this bond would be N A = 6 × 10 23
  11. 11An α -paticle approaches the target nucleus of copper (Z = 29) in such a way that the value of impact parameter is zero. The distance of clo
  12. 12I E 1 for H and He are 13.6 eV and 24.6 eV respectively. Thus, energy required in eV during the formation of He 2+ by He → He 2+ + 2e − is
  13. 13The vapour of Hg absorb some electrons accelerated by a potential difference of 4.5 volts from rest as a result of which light is emitted. I
  14. 14An electron beam can undergo diffraction by crystals. The potential of 'V' volt should a beam of electrons be accelerated so that its wavele
  15. 15Ionisation energy of a hydrogen like species is 54 .4 eV . Calculate radius of second bohr orbit of this species.
  16. 16The maximum probability of finding electron in the d x y orbital is:
  17. 17The wave number of the first emission line in the Balmer series of H-Spectrum is n 36 R . The value of 'n' is. (R = Rydberg constant):
  18. 18Radiation corresponding to the transition n = 4 to n = 2 in hydrogen atoms falls on a certain metal (work function = 2.0 e V ). The maximum
  19. 19Electronic configurations of few elements are given below. Mark the incorrect match.
  20. 20The energy of an electron in Bohr's orbit of hydrogen atom is 13 .6 eV . The total electronic energy of a hypothetical He atom in which ther
  21. 21If an electron of hydrogen atom moves from fourth excited state to ground state in Lymen series find the total number of spectral lines?
  22. 22Consider the following radial distribution function diagrams. Which of the following has the correct matching of curve and orbital ?
  23. 23A metal surface is illuminated by light of two different wavelengths 248 nm and 310 nm . The maximum speeds of the photoelectrons correspond
  24. 24A certain metal when irradiated by light r = 3.2 × 10 16 H z emtextts photoelectrons with twice kinetic energy as did photoelectrons when th
  25. 25Which of the following plots of radial-probability function 4 π r 2 ψ 2 is/are correct (i) (ii) (iii) (iv)
  26. 26The radial wave equation for hydrogen atom is ψ = 1 16 4 1 a ο 3 2 x ⁡ - 1 x 2 ⁡ - 8 x ⁡ + 12 e - x 2 where x = 2 r a o , a ο = radius of fi
  27. 27The radius of the first orbit of hydrogen atom is 0.52 × 1 0 - 8 cm. The radius of the first orbit of helium atom is
  28. 28Calculate the uncertainty in velocity if the uncertainty in the position of a moving bullet of mass 10 gm is 1 0 - 5 m .
  29. 29The third line of the Balmer series in the emission spectrum of the hydrogen atom is due to the transition from the
  30. 30X -rays can be generated by accelerating electrons in a vacuum and letting them impact on atoms in a metal surface. If the 1000 eV kinetic e
  31. 31Atomic number of Hydrogen like species that has a wave length difference of 59.3 nm between first lin e of Balmer and first line of Lyman se
  32. 32The characteristic X-rays wavelength is related to atomic number by the relation ν = a Z - b When Z is the atomic number, a and b are Mosley
  33. 33For an electron whose positional uncertainty is 1.0 × 1 0 - 10 m , the uncertainty in the component of the velocity in m s - 1 will be
  34. 34The electronic configuration of few elements is given below. Mark the statement which is not correct about these elements. (i) 1 s 2 2 s 2 2
  35. 35Find the sum of maximum number of electrons having + 1 and – 1 value of ‘ m ’ in T i
  36. 36An electron in an atom jumps in such a way that its kinetic energy changes from x to x 9 . The change in its potential energy (magnitude) wi
  37. 37A particle having a mass of 1.0 mg has a velocity of 3600 k m / h . Calculate the wavelength of the particle.
  38. 38The radius of the second Bohr orbit, in terms of the Bohr radius (a 0 ) , of L i 2 + is given as x a 0 y . Find the sum of x + y here?
  39. 39An element undergoes a reaction as shown : X + 2 e - → X 2 - , energy released = 30 .87 eV / atom . If the energy released is used to dissoc
  40. 40If α = h 4 π 2 m e 2 , then the correct expression to calculate of the circumference of the first orbit of hydrogen atom is
  41. 41For a hypothetical H-like atom, which follows Bohr model, some spectral lines are observed as shown. If it is known that line E belong to vi
  42. 42What is the wavelength of light emitted when the electron in a hydrogen atom undergoes transition from an energy level with n = 4 to an ener
  43. 43Amongst the following statements, select the set having statements which was proposed by Dalton. (1) All the atoms of a given element have i
  44. 44If the radius of first Bohr's orbit of hydrogen is x , then de-Broglie wavelength of electron in its 3rd orbit is
  45. 45Which of the following orbitals are degenerate? 3d xy , 4d xy , 3d z 2 , 3d yz , 5d z 2
  46. 46Radial nodes present in 3s and 2p-orbitals are respectively
  47. 47Calculate the number of waves made by a Bohr electron in one complete revolution in nth orbit of H e + ion, if ratio of de-Broglie wavelengt
  48. 48In an atom, two electrons revolve around the nucleus in circular orbits of radii r and 4r. The ratio of the time taken by them (T 2 : T 1 )
  49. 49Which of the following curve is correct for blackbody radiation? (Given: T 1 T 2 T 3 T 4 )
  50. 50The angular momentum of an electron in H e + moving in an orbit is h / π . The de-brogile wavelength associated with electron is: [ a 0 is r

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This chapter includes 99 NTA Abhyas (JEE Main) questions.

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These are NTA Abhyas (JEE Main) questions specifically for the Structure of Atom chapter. Questions from other exams like JEE Main or JEE Advanced are organised separately under their respective exam sections.

3.What is the difficulty level of Structure of Atom questions in NTA Abhyas (JEE Main)?

Of the 99 questions analysed for this chapter, 100% are easy, 0% moderate and 0% tough. 2026 had the most, with 0 questions.

4.Which topics in Structure of Atom should I focus on?

All of this chapter's questions come from a single topic: Uncategorized.