Atomic Structure JEE Questions PDF with Solution, Practice Now

Atomic Structure JEE Questions: Atomic structure refers to the configuration or the arrangement of electrons, protons, and neutrons within an atom. The atomic structure of a substance determines its reactivity and behavior, which are the fundamental aspects of chemistry and physics. Aspirants preparing for JEE should have a good understanding of atomic structure as it is an important and covered topic in the JEE Main chemistry syllabus.

JEE aspirants preparing for JEE 2026 should solve Atomic Structure JEE Mains questions & JEE Advanced Atomic Theory Questions. Solving these questions regularly can help aspirants improve their conceptual clarity and prepare them for a variety of tricky questions on atomic models, electron configuration, and properties of atoms.

Atomic Structure JEE Questions Overview

Atomic structure questions in JEE exams typically include a wide range of important topics such as Bohr’s model, quantum numbers, electronic configuration, and properties of atoms. JEE Mains atomic structure questions & JEE Advanced atomic theory questions are designed to assess the understanding of the concepts at various levels of difficulty. Important Questions on Atomic Structure are Prepared by teachers after Carefully Analysing Previous Year Papers

Aspirants can practice Important Questions on Atomic Structure after a thorough analysis of JEE Main previous year papers. This will help them to focus on the most important and frequently asked questions on atomic structure. 

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Practice Atomic Structure JEE Questions 

Consistent practice of atomic structure JEE Mains questions as well as JEE Advanced atomic theory questions, is essential for JEE success. It will familiarize the students with the pattern of the questions and enhance their speed of solving problems. Solving these questions regularly will help build your confidence and improve your accuracy during the exam.

1. The wavelength of Kα-characteristic X-rays produced is λ, when cathode rays strike a metal of atomic number Z. What should be the atomic number of metal such that it can produce the Kα-characteristic X-rays of wavelength 4λ?

1.  Z/16
2.  Z/2
3. (Z+1)/2
4. 2Z − 1

2. For H-atom some spectral lines are observed as shown (n1 to n5 are successive shells). If 'E' belongs to visible region, then correct statements for the following transitions are

(i) There cannot be any line in UV region
(ii) b and d lines belongs to Infrared region.
(iii) Line having shortest wavelength is a
(iv) Line having least energy is c

1. (i), (ii) and (iii) only
2. (i) and (ii) only
3. (iii) and (iv) only
4. (i), (ii), (iii) and (iv)

3. An electron present in the third excited state of a H atom returns to the first excited state and then to the ground state. If λ1 and λ2 are the wavelengths of light emitted in these two transitions respectively, then λ1 : λ2 is

1. 4 : 1
2. 5 : 9
3. 3 : 1
4.  2 : 1

4. Which of the following statement is incorrect?

1. The ground state electronic configuration of Cr is [Ar] 3d5, 4s1. (Atomic number of Cr = 24)
2.  In silver atom, 23 electrons have a spin of one type and 24 of the opposite type. (Atomic number of Ag = 47)
3. For chromium maximum no. of electrons having ℓ + m = 2 is 5
4. None of these

5. The radial probability distribution curve of an orbital of H has 4 local maxima. If orbital has 3 angular nodes then orbital will be:

1. 7f
2. 8f
3. 7d
4. 8d

6. Radiations corresponding to the transition n = 3 to n = 1 in hydrogen atom falls on a certain metal of work function 3 eV:
(I) The maximum kinetic energy of the photoelectron will be 0.99 eV
(II) Stopping potential will be 9.09 V
(III) The maximum kinetic energy of the photoelectron will be 8.09 eV
(IV) Stopping potential will be 8.09 V
Select the correct statements:

1.  I, IV only
2.  I, II only
3.  II, III only
4.  III, IV only

7. The electrons identified by quantum numbers n and ℓ :
(a) n = 5, ℓ = 1
(b) n = 5, ℓ = 0
(c) n = 4, ℓ = 2
(d) n = 4, ℓ = 1
can be placed in order of increasing energy as:

1. (c) < (d) < (b) < (a)
2.  (d) < (b) < (c) < (a)
3. (b) < (d) < (a) < (c)
4. (a) < (c) < (b) < (d)

8. Which of the following transitions in Li+2 will have the same wavelength as that of n = 4 to n = 2 transition in Hydrogen?

1. 4 → 2
2.  2 → 1
3. 12 → 6
4. 12 → 4

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Atomic Structure JEE Questions PDF

To improve their JEE preparation, students can download the Atomic Structure JEE Questions PDF. This JEE Atomic Structure Questions PDF contains questions based on the topic as well as previous year JEE Main and Advanced questions with detailed solutions.