CBSE Class 11 Chemistry Classification of Element And Periodicity In Properties Worksheet

Access the latest CBSE Class 11 Chemistry Classification of Element And Periodicity In Properties Worksheet. We have provided free printable Class 11 Chemistry worksheets in PDF format, specifically designed for Chapter 3 Classification of Elements and Periodicity in Properties. These practice sets are prepared by expert teachers following the 2025-26 syllabus and exam patterns issued by CBSE, NCERT, and KVS.

Chapter 3 Classification of Elements and Periodicity in Properties 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 3 Classification of Elements and Periodicity in Properties, 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.

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CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
 
1. Write the symbol and IUPAC name of the element with atomic number 126.
 
2. Among the elements of the third period, pick out the element with
i. highest first IE
ii. largest atomic radius
iii. most reactive non-metal
iv. most reactive metal
 
3. Which atom in each of the following pairs has greater first IE? Give reasons.
 
a) B or C    b) N or O      c) F or Ne     d) Cl or F     e) K or Ar     f) Kr or Xe
 
4. Arrange the following in increasing order of size by giving reason
 
a) K, K+     b) I+, I , I-      c) Li+, Na+     d) P, As      e) Mg2+, Na+     f) O2-, F-
 
5. Predict the position in the periodic table
 
i) (n-1)d1 ns2 where n=4 ii) (n-1) d2 ns2 where n=5
 
6. If A = 1s2, 2s2, 2p1 B = 1s2, 2s2, 2p6, 3s2, 3p1
C = 1s2, 2s2, 2p6, 3s2, 3p3 D = 1s2, 2s2, 2p6, 3s2, 3p5
E = 1s2, 2s2, 2p6, 3s2, 3p6, 4s2 F = 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d1
 
i) Which is the most metallic?
ii) Which has the highest negative value for electron gain enthalpy?
iii) Which one belongs to the d-block?
iv) Which is a halogen?
v) Which two elements are in the same group?
vi) Which element belongs to the 13th group?
 
7. The first & second ionization enthalpies &electron gain enthalpies of elements A, B, C.&D are as follows

CBSE Class 11 Chemistry Classification of Element And Periodicity In Properties Worksheet 1

Identify the element which is likely to be a
i. most reactive non-metal iii. most reactive metal
ii. a noble gas iv. metal forming binary halide (MX2)
 
8. Explain why?
 
i. Lanthanides and actinides are placed separately in the periodic table
 
ii. IE of Na+ is almost double that of Ne.
 
iii. Third period contains only 8 elements.
 
iv. Cl- is larger than Cl.
 
v. IE2 of Na is greater than IE2 of Mg.
 
vi. IE1 of B is 800kJ/mole while IE1 of Be is 900kJ/mole.
 
vii. ΔegH of F is less negative than that of Cl.
 
viii. IE1 of N is 1402kJ while that of O is 1314kJ.
 
ix. Li & Mg resemble in many of their properties.
 
9. Arrange the following elements S, P, O, N in the increasing order of non-metallic character
 
10. What is the difference between electron gain enthalpy and electro negativity?
 
11. What are isoelectronic species? Name the species that will be isoelectronic with each of the following atoms or ions. (i) F- (ii) Ar (iii) Mg2+ (iv) Rb+
 
12 Explain why cations are smaller than corresponding atoms whereas anions are larger than their parent atoms.
 
13 Define ioinsation enthalpy. What are the various factors due to which the ionization enthalpy of the main group elements tends to increase across a period?
 
14 Write the general characteristics and the outer electronic configuration of the following
i. s block elements iii. f block elements
ii. p block elements iv. d block elements
 
15 What do you mean by screening effect?
 
16 To which group and period will the element with atomic number 111 belong?
 
17 What is the oxidation state and covalency of [Al Br(NH3)5]2+?
 
18 What are representative elements?
 
19 What are i.) d block elements ii.) f block elements?
 
20 With the help of chemical equations explain the nature of sodium oxide and Aluminium oxide.

 

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Chapter 01 Some Basic Concepts of Chemistry
CBSE Class 11 Chemistry Some Basic Concepts of Chemistry Worksheet Set A
CBSE Class 11 Chemistry Some Basic Concepts of Chemistry Worksheet Set B
CBSE Class 11 Chemistry Some Basic Concepts Worksheet Set A
CBSE Class 11 Chemistry Some Basic Concepts Worksheet Set B
CBSE Class 11 Chemistry Some Basic Concepts Worksheet Set C
CBSE Class 11 Chemistry Some Basic Concepts Worksheet Set D
CBSE Class 11 Chemistry Some Basic Principles And Techniques Worksheet
CBSE Class 11 Mole Concept Percentage Composition Worksheet
CBSE Class 11 Properties of Matter and their Measurement Worksheet A
CBSE Class 11 Stoichiometry and Stoichiometric Calculations Worksheet A
CBSE Class 11 Uncertainty in Measurement Worksheet A
Chapter 02 Structure of Atom
CBSE Class 11 Atomic Models Worksheet A
CBSE Class 11 Bohrs Model of an atom Worksheet A
CBSE Class 11 Chemistry Structure of Atom Worksheet Set A
CBSE Class 11 Chemistry Structure of Atom Worksheet Set A
CBSE Class 11 Chemistry Structure of Atom Worksheet Set B
CBSE Class 11 Chemistry Structure of Atom Worksheet Set B
CBSE Class 11 Chemistry Structure of Atom Worksheet Set C
CBSE Class 11 Chemistry Structure of Atom Worksheet Set C
CBSE Class 11 Chemistry Structure of Atom Worksheet Set D
CBSE Class 11 Discovery of Sub Atomic Particles Worksheet A
CBSE Class 11 Orbitals and Quantum Numbers Worksheet A
CBSE Class 11 Quantum Mechanical Model of the Atom Worksheet A
Chapter 03 Classification of Elements and Periodicity in Properties
CBSE Class 11 Chemical Properties of Element Worksheet A
CBSE Class 11 Chemistry Classification of Element And Periodicity In Properties Worksheet
CBSE Class 11 Chemistry Classification of Elements and Periodicity in Properties Worksheet Set A
CBSE Class 11 Chemistry Classification of Elements and Periodicity in Properties Worksheet Set B
CBSE Class 11 Chemistry Periodic Classification Worksheet
CBSE Class 11 Genesis of Periodic Classification Worksheet A
CBSE Class 11 Modern Periodic law and Nomenclature Worksheet A
CBSE Class 11 Trends in Physical Properties of Elements Worksheet A
Chapter 04 Chemical Bonding and Molecular Structure
CBSE Class 11 Chemical Bonding Kossel Lewis approach Worksheet A
CBSE Class 11 Chemical Bonding and Molecular Structure Worksheet A
CBSE Class 11 Chemistry Chemical Bonding and Molecular Structure Worksheet Set A
CBSE Class 11 Chemistry Chemical Bonding And Molecular Structure Worksheet Set A
CBSE Class 11 Chemistry Chemical Bonding and Molecular Structure Worksheet Set B
CBSE Class 11 Chemistry Chemical Bonding And Molecular Structure Worksheet Set B
CBSE Class 11 Chemistry Chemical Bonding and Molecular Structure Worksheet Set C
CBSE Class 11 Chemistry Chemical Bonding And Molecular Structure Worksheet Set C
CBSE Class 11 Hybridisation Worksheet A
CBSE Class 11 Ionic Bonding Worksheet A
CBSE Class 11 Molecular Orbital Theory Worksheet A
Chapter 05 Thermodynamics
CBSE Class 11 Application of Thermodynamic state Functions Worksheet A
CBSE Class 11 Chemistry Thermodynamics Worksheet Set A
CBSE Class 11 Chemistry Thermodynamics Worksheet Set B
CBSE Class 11 Chemistry Thermodynamics Worksheet Set B
CBSE Class 11 Chemistry Thermodynamics Worksheet Set C
CBSE Class 11 Chemistry Thermodynamics Worksheet Set D
CBSE Class 11 Enthalpy Change of a Reaction Worksheet A
CBSE Class 11 Spontaneity Worksheet A
CBSE Class 11 Thermodynamic Terms Worksheet A
Chapter 06 Equilibrium
CBSE Class 11 Applications of Equilibrium constants Worksheet A
CBSE Class 11 Buffer solution and solubility Product Worksheet A
CBSE Class 11 Chemistry Equilibrium Worksheet Set A
CBSE Class 11 Chemistry Equilibrium Worksheet Set A
CBSE Class 11 Chemistry Equilibrium Worksheet Set B
CBSE Class 11 Chemistry Equilibrium Worksheet Set B
CBSE Class 11 Chemistry Equilibrium Worksheet Set C
CBSE Class 11 Equilibrium in Chemical processes Worksheet A
CBSE Class 11 Equilibrium in physical processes Worksheet A
CBSE Class 11 Factors Affecting Equilibria Worksheet A
CBSE Class 11 Ionic Equilibrium In solution Worksheet A
CBSE Class 11 Ionization of Acids and Bases Worksheet A
Chapter 07 Redox Reactions
CBSE Class 11 Balancing of Redox Reactions Worksheet A
CBSE Class 11 Chemistry Redox Reaction Worksheet Set A
CBSE Class 11 Chemistry Redox Reactions Worksheet Set A
CBSE Class 11 Chemistry Redox Reactions Worksheet Set B
CBSE Class 11 Oxidation and Reduction Reactions Worksheet A
CBSE Class 11 Redox Reactions and Electrode Processes Worksheet A
CBSE Class 11 Redox Reactions in terms of Electron Transfer reactions Worksheet A
CBSE Class 11 Types of Redox Reduction Worksheet A
Chapter 08 Organic Chemistry – Some Basic Principles & Techniques
CBSE Class 11 Chemistry Organic Chemistry Worksheet
CBSE Class 11 Chemistry Organic Chemistry Worksheet Set A
CBSE Class 11 Chemistry Organic Chemistry Worksheet Set B
CBSE Class 11 Chemistry Organic Chemistry Worksheet Set C
CBSE Class 11 Classification of Organic Compounds Worksheet A
CBSE Class 11 Fundamental Concepts in Organic Reaction Mechanism Worksheet A
CBSE Class 11 Methods of Purification of Organic Compounds Worksheet A
CBSE Class 11 Nomenclature of Organic Compounds and Isomerism Worksheet A
CBSE Class 11 Qualitative Analysis of Organic Compounds Worksheet A
CBSE Class 11 Tetra valence of Carbon Worksheet A
Chapter 09 Hydrocarbons
CBSE Class 11 Alkenes Structure and Isomerism Worksheet A
CBSE Class 11 Alkynes Worksheet A
CBSE Class 11 Aromatic Hydrocarbon Worksheet A
CBSE Class 11 Chemical and Physical Properties of Alkanes Worksheet A
CBSE Class 11 Chemistry Hydrocarbons Worksheet Set A
CBSE Class 11 Chemistry Hydrocarbons Worksheet Set A
CBSE Class 11 Chemistry Hydrocarbons Worksheet Set B
CBSE Class 11 Chemistry Hydrocarbons Worksheet Set B
CBSE Class 11 Classification of Hydrocarbons Alkanes Worksheet A
CBSE Class 11 Preparation of Alkanes Worksheet A
CBSE Class 11 Preparation of Alkenes Worksheet A
CBSE Class 11 Preparation of Alkynes Worksheet A
CBSE Class 11 Properties of Alkenes Worksheet A
CBSE Class 11 Properties of Alkynes Worksheet A
z More Worksheets for Class 11 Chemistry
CBSE Class 11 Acid Rain and Photochemical Smog Worksheet A
CBSE Class 11 Bond Order Resonance structure and Polarity of bonds Worksheet A
CBSE Class 11 Chemistry Analysis of Inorganic Salt Worksheet
CBSE Class 11 Chemistry Determination of PH Worksheet
CBSE Class 11 Chemistry Project Worksheet
CBSE Class 11 Chemistry Worksheet Set A Solved
CBSE Class 11 Chemistry Worksheet Set B Solved
CBSE Class 11 Chemistry Worksheet Set C Solved
CBSE Class 11 Chemistry Worksheet Set D Solved
CBSE Class 11 Chemistry Worksheet Set E Solved
CBSE Class 11 Chemistry Worksheet Set F Solved
CBSE Class 11 Chemistry Worksheet Set G Solved
CBSE Class 11 Chemistry Worksheet Set H Solved
CBSE Class 11 Chemistry Worksheet Set I Solved
CBSE Class 11 Global Warming and Greenhouse Effect Worksheet A
CBSE Class 11 Heat Capacity Worksheet A
CBSE Class 11 Miscellaneous Questions Worksheet A
CBSE Class 11 Photoelectric Effect Worksheet A
CBSE Class 11 Preparation of Benzene Worksheet A
CBSE Class 11 Properties of Benzene Worksheet A
CBSE Class 11 Resonance structure and Resonance effect Worksheet A
CBSE Class 11 Sigma and pi bond Worksheet A
~ 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 2 Alkaline Earth 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 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 of Dihydrogen Worksheet A
CBSE Class 11 Properties and Preparation of Hydrogen 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

Important Practice Resources for Class 11 Chemistry

Chapter 3 Classification of Elements and Periodicity in Properties CBSE Class 11 Chemistry Worksheet

Students can use the Chapter 3 Classification of Elements and Periodicity in Properties 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 3 Classification of Elements and Periodicity in Properties

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.

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