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Chemistry · JEE

Important Questions: Atomic Structure for JEE

13+ syllabus-aligned questions available

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The most important Atomic Structure questions for JEE cover conceptual traps, standard results, and numerical patterns from Nature of electromagnetic radiation, photoelectric effect, spectrum of the hydrogen atom, Bohr model of a hydrogen atom: its postulates, derivation of the relations for the energy of the electron and radii of the different orbits, limitations of Bohr's model, Dual nature of matter, de Broglie's relationship, Heisenberg uncertainty principle, Elementary ideas of quantum mechanics, the quantum mechanical model of the atom and its important features, and more. Goodmarks provides 13+ high-yield MCQs with full solutions.

Focus on what matters most. These important Atomic Structure questions cover high-weightage concepts from Nature of electromagnetic radiation, photoelectric effect, spectrum of the hydrogen atom, Bohr model of a hydrogen atom: its postulates, derivation of the relations for the energy of the electron and radii of the different orbits, limitations of Bohr's model, Dual nature of matter, de Broglie's relationship, Heisenberg uncertainty principle, Elementary ideas of quantum mechanics, the quantum mechanical model of the atom and its important features, and more — the topics JEE repeats every year.

Subtopics in Atomic Structure

  • Nature of electromagnetic radiation, photoelectric effect, spectrum of the hydrogen atom
  • Bohr model of a hydrogen atom: its postulates, derivation of the relations for the energy of the electron and radii of the different orbits, limitations of Bohr's model
  • Dual nature of matter, de Broglie's relationship, Heisenberg uncertainty principle
  • Elementary ideas of quantum mechanics, the quantum mechanical model of the atom and its important features
  • Concept of atomic orbitals as one-electron wave functions, variation of Psi and Psi^2 with r for 1s and 2s orbitals
  • Various quantum numbers (principal, angular momentum and magnetic quantum numbers) and their significance
  • Shapes of s, p and d orbitals, electron spin and spin quantum number
  • Rules for filling electrons in orbitals: Aufbau principle, Pauli's exclusion principle and Hund's rule
  • Electronic configuration of elements and extra stability of half-filled and completely filled orbitals

Free sample questions

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Q1ChemistryUnit 2: Atomic Structure
Which of the following statements is not true about canal rays?
Q2ChemistryUnit 2: Atomic Structure
Uncertainity in position of a particle of 25g25 \mathrm{g} in space is 10−15m.10^{-15} \mathrm{m} . Determine uncertainity in velocity (msec−1)\left(\mathrm{m} \mathrm{sec}^{-1}\right) in it. (plank's constant, h=6.6×10−34Js\boldsymbol{h}=\mathbf{6 . 6} \times \mathbf{1 0}^{-\mathbf{3 4}} \mathbf{J s} )
Q3ChemistryUnit 2: Atomic Structure
The stability of ferric ion is due to
Q4ChemistryUnit 2: Atomic Structure
Assertion According to de Broglie, the wavelengths associtated with electrons and other subatomic particles can be detected experimentally. Reason The wavelength associated with any material particle is directly proportional to its mass.
Q5ChemistryUnit 2: Atomic Structure
Rutherfords alpha particle scattering experiment concluded that:
Q6ChemistryUnit 2: Atomic Structure
From the α\alpha -particle scattering experiment, Rutherford concluded that: This question has multiple correct options
Q7ChemistryUnit 2: Atomic Structure
In a certain Bohr orbit, the total energy is −4.9eV.-4.9 e V . For this orbit, the kinetic energy, and potential energy are respectively:
Q8ChemistryUnit 2: Atomic Structure
The frequency of e−e^{-} in the first Bohr orbit in a H-atom is:

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Frequently asked questions

What makes a Atomic Structure question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Atomic Structure are high-weightage?

Key areas include Nature of electromagnetic radiation, photoelectric effect, spectrum of the hydrogen atom, Bohr model of a hydrogen atom: its postulates, derivation of the relations for the energy of the electron and radii of the different orbits, limitations of Bohr's model, Dual nature of matter, de Broglie's relationship, Heisenberg uncertainty principle, Elementary ideas of quantum mechanics, the quantum mechanical model of the atom and its important features, and more. Prioritise these before moving to edge cases.

How many important questions should I revise?

Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

Can I practise only important questions on Goodmarks?

Pro users can filter by unit and subtopic to target high-yield areas. Free users can attempt sample questions on this page.

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