CBSE Class 11 Chemistry Structure of Atom Worksheet Set B

Access the latest CBSE Class 11 Chemistry Structure of Atom Worksheet Set B. We have provided free printable Class 11 Chemistry worksheets in PDF format, specifically designed for Chapter 2 Structure of Atom. These practice sets are prepared by expert teachers following the 2025-26 syllabus and exam patterns issued by CBSE, NCERT, and KVS.

Chapter 2 Structure of Atom Chemistry Practice Worksheet for Class 11

Students should use these Class 11 Chemistry chapter-wise worksheets for daily practice to improve their conceptual understanding. This detailed test papers include important questions and solutions for Chapter 2 Structure of Atom, to help you prepare for school tests and final examination. Regular practice of these Class 11 Chemistry questions will help improve your problem-solving speed and exam accuracy for the 2026 session.

Download Class 11 Chemistry Chapter 2 Structure of Atom Worksheet PDF

STRUCTURE OF ATOM
 
1. Ca lculate the energy of each of the photons which
i) correspond to light of frequency 3x 1015 Hz
ii) have wavelength of 0.50 A0
 
2. Ca lculate the energy and radius of the first orbit of He+ ion.
 
3. Ca lculate the wavelength of the photon that is emitted when an electron in Bohr’s orbit n=2 returns to the orbit n=1 in the hydrogen atom.
 
4. Ca lculate the de Broglie wavelength of a bullet of mass 2.2 x 10-3 Kg fired with a velocity of 300 m/s.
 
5. Ca lculate the speed of an electron if its de Broglie wavelength is twice its displacement in one second.
 
6. Ca lculate the uncertainty in the velocity of a cricket ball if the mass is 200 g. Uncertainty in the position is 1pm.
 
7. An electron beam from an accelerator is with kinetic energy 1.6 x 10-17J. What is its de Broglie wavelength?
 
8. A photon of wavelength 4 × 10–7 m strikes on metal surface, the work function of the metal being 2.13 eV. Calculate
(i) the energy of the photon (eV)
(ii) the kinetic energy of the emission, and
(iii) The velocity of the photoelectron (1 eV= 1.6020 × 10–19J).
 
9. Sh ow that the wavelength related to a 250g object moving with a speed of 100 m/s is too short to be observed.
 
10. i. State Heisenberg’s uncertainty principle.
ii. A table tennis ball has mass 10g and a speed of 90m/s. If speed can be measured with an accuracy of 4% what will be the uncertainty in the speed and position?
 
11. Tw o particles A and B are in motion. If the momentum of A is half of that of B and if the wavelength of A is 4.5 x 102 nm, what is the wavelength of B?
 
12. W hat is meant by “ Energy of an electron in a hydrogen atom is quantized”
 
13. i. Explain the dual nature of light.
ii. When would the wavelength associated with an electron be equal to the wavelength associated with a proton?
 
14. Ele ctrons are emitted with zero velocity from a metal surface when it is exposed to radiation of wavelength 6800Ao.Calculate the threshold frequency and work function of the metal.
 
15. W hy is the electronic energy of hydrogen negative?
 
16. De fine
i. Photoelectric effect
ii. Black body radiation
 
17. Di fferentiate
i. Absorption and emission spectrum
ii. Orbit and orbital
 
18. W hy is the concept of orbit replaced by the concept of orbital?
 
19. Dr aw the shapes (boundary surfaces) of the following orbitals.
(i) 2py (ii) 3dz2 (iii) 3dx2 – y2
 
 
20. i) What do you understand by quantum numbers? What is their significance?
ii) Describe the orbital: a) n=2, l=0 b) n=6, l = 4 c) n= 2, l =3
 
21. i) State (n+l) rule.
ii) Give reason: In the building up of atoms, 4s is filled before 3d
 
22. Ho w many electrons are possible in a) 4p b) 5pz c) n= 3, l= 2 d) n= 4, l=2, s= + ½
 
23. W hy are half filled and completely filled orbitals more stable?
 
24. W ith the help of Pauli’s exclusion principle and the concept of atomic numbers for orbitals, show that an M shell cannot accommodate more than 18 electrons.
 
25. Lis t the quantum numbers of a) unpaired electron in F , b) valence electrons in P , Ca
 
26. W hat are the possible values of l and m for a) n=3 b) n=2
 
27. (a) How many electrons in an atom may have the following quantum number?
 
(i) n = 4 ms = +1/2 (ii) n = 3 , l = 0
 
(b) What are the atomic numbers of elements whose outermost electrons are represented by
 
(i) 3s1 (ii) 2p3 (iii) 3d6
 
28. Ba sed on Bohr Bury rules arrange the following orbitals in the increasing order of energy.
(i) 5f , 4d , 7s , 7p (ii) 5p , 4d , 5d , 4f , 6s
 
29. Di scuss the similarities and differences (two each) between a 1s and a 2s orbital.
 
30. i . Which is more stable a) Mn2+ or Mn3+ b) Fe2+ or Fe3+? Give reason.
ii. Which rule is disobeyed while writing electronic configuration of carbon as 1s2 ,2s2 ,2px2? State the rule and write the correct configuration.
 
iii. Electronic configuration in Copper is [Ar] 4s1, 3d10 and not [Ar] 4s2, 3d9.Why?
 
iv. Among the following pairs of orbitals which orbital will experience the larger effective nuclear charge? (i) 2s and 3s, (ii) 4d and 4f, (iii) 3d and 3p.


Please click on below link to download CBSE Class 11 Chemistry Structure of Atom Worksheet Set B

~ Class 11 Chemistry (Old Chapters)
CBSE Class 11 Atmospheric Pollution Worksheet A
CBSE Class 11 Behaviour of Real Gases Worksheet A
CBSE Class 11 Chemistry Environmental Chemistry Worksheet
CBSE Class 11 Chemistry Environmental Chemistry Worksheet Set A
CBSE Class 11 Chemistry Environmental Chemistry Worksheet Set B
CBSE Class 11 Chemistry Environmental Worksheet
CBSE Class 11 Chemistry Hydrogen Worksheet Set A
CBSE Class 11 Chemistry Hydrogen Worksheet Set A
CBSE Class 11 Chemistry Hydrogen Worksheet Set B
CBSE Class 11 Chemistry Hydrogen Worksheet Set B
CBSE Class 11 Chemistry P-Block Elements Worksheet Set A
CBSE Class 11 Chemistry P-Block Elements Worksheet Set B
CBSE Class 11 Chemistry P-Block Elements Worksheet Set C
CBSE Class 11 Chemistry P-Block Elements Worksheet Set C
CBSE Class 11 Chemistry S-Block Elements Worksheet Set A
CBSE Class 11 Chemistry S-Block Elements Worksheet Set B
CBSE Class 11 Chemistry States of Matter Worksheet Set A
CBSE Class 11 Chemistry States of Matter Worksheet Set A
CBSE Class 11 Chemistry States of Matter Worksheet Set B
CBSE Class 11 Chemistry The p-Block Elements Worksheet Set A
CBSE Class 11 Chemistry The s-Block Elements Worksheet Set A
CBSE Class 11 Chemistry The s-Block Elements Worksheet Set B
CBSE Class 11 General Characteristics of Compounds of the Alkaline Earth Metals Worksheet A
CBSE Class 11 General Characteristics of p-block elements Worksheet A
CBSE Class 11 General Characteristics of the Compounds of the alkali metals Worksheet A
CBSE Class 11 Group 1 Elements Alkali Metals Worksheet A
CBSE Class 11 Group 13 Elements The Boron Tamely Worksheet A
CBSE Class 11 Group 14 Elements The Carbon family Worksheet A
CBSE Class 11 Group 2 Alkaline Earth Metals Worksheet A
CBSE Class 11 Hydrides Worksheet A
CBSE Class 11 Hydrogen Peroxide Worksheet A
CBSE Class 11 Ideal Gas equation Worksheet A
CBSE Class 11 Important Compounds of Calcium Worksheet A
CBSE Class 11 Important Compounds of Carbon and Silicon Worksheet A
CBSE Class 11 Important trends and Anomalous Behaviour of Carbon Worksheet A
CBSE Class 11 Intermolecular forces Worksheet A
CBSE Class 11 Liquid state Worksheet A
CBSE Class 11 Matter and its Classification Worksheet A
CBSE Class 11 Properties and Preparation of Hydrogen Worksheet A
CBSE Class 11 Properties of Dihydrogen Worksheet A
CBSE Class 11 Some Important compounds of sodium Worksheet A
CBSE Class 11 The Gaseous State and The Gas Laws Worksheet A
CBSE Class 11 Water and Soil Pollution Worksheet A
CBSE Class 11 Water Worksheet A

Chapter 2 Structure of Atom CBSE Class 11 Chemistry Worksheet

Students can use the Chapter 2 Structure of Atom practice sheet provided above to prepare for their upcoming school tests. This solved questions and answers follow the latest CBSE syllabus for Class 11 Chemistry. You can easily download the PDF format and solve these questions every day to improve your marks. Our expert teachers have made these from the most important topics that are always asked in your exams to help you get more marks in exams.

NCERT Based Questions and Solutions for Chapter 2 Structure of Atom

Our expert team has used the official NCERT book for Class 11 Chemistry to create this practice material for students. After solving the questions our teachers have also suggested to study the NCERT solutions  which will help you to understand the best way to solve problems in Chemistry. You can get all this study material for free on studiestoday.com.

Extra Practice for Chemistry

To get the best results in Class 11, students should try the Chemistry MCQ Test for this chapter. We have also provided printable assignments for Class 11 Chemistry on our website. Regular practice will help you feel more confident and get higher marks in CBSE examinations.

Where can I download the latest PDF for CBSE Class 11 Chemistry Structure of Atom Worksheet Set B?

You can download the teacher-verified PDF for CBSE Class 11 Chemistry Structure of Atom Worksheet Set B from StudiesToday.com. These practice sheets for Class 11 Chemistry are designed as per the latest CBSE academic session.

Are these Chemistry Class 11 worksheets based on the 2026 competency-based pattern?

Yes, our CBSE Class 11 Chemistry Structure of Atom Worksheet Set B includes a variety of questions like Case-based studies, Assertion-Reasoning, and MCQs as per the 50% competency-based weightage in the latest curriculum for Class 11.

Do you provide solved answers for CBSE Class 11 Chemistry Structure of Atom Worksheet Set B?

Yes, we have provided detailed solutions for CBSE Class 11 Chemistry Structure of Atom Worksheet Set B to help Class 11 and follow the official CBSE marking scheme.

How does solving CBSE Class 11 Chemistry Structure of Atom Worksheet Set B help in exam preparation?

Daily practice with these Chemistry worksheets helps in identifying understanding gaps. It also improves question solving speed and ensures that Class 11 students get more marks in CBSE exams.

Is there any charge for the Class 11 Chemistry practice test papers?

All our Class 11 Chemistry practice test papers and worksheets are available for free download in mobile-friendly PDF format. You can access CBSE Class 11 Chemistry Structure of Atom Worksheet Set B without any registration.