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    NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties

    Get free NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties updated for the term - I CBSE Syllabus 2022-23 here.

    NCERT SolutionsNCERT Class 11NCERT 11 ChemistryChapter 3: Classification Of Elements And Periodicity

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    NCERT Solutions for Class 11 Chemistry Chapter 3: Classification of Elements and Periodicity in Properties

    NCERT Solutions for Class 11 Chemistry Chapter 3: Classification of Elements and Periodicity in Properties NCERT Solutions Class 11 Chemistry Chapter 3 – Free PDF Download

    NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties are provided on this page for CBSE Class 11 students. Comprehensive, student-friendly answers are provided according to the latest CBSE Syllabus 2022-23 to all the in-text and exercise questions present in Chapter 3 of the NCERT Class 11 Chemistry textbook. Students can understand the fundamental concepts effectively using the solutions given by BYJU’S. NCERT Solutions are created in a student-friendly format so that framing answers for difficult questions would be an easy task for the students.

    In Chapter 3, all the crucial topics are explained with much importance as questions based on them can appear in the board exam and other competitive exams. The detailed explanations provided for each concept provide students with a good learning experience. The faculty design the solutions in such a way that students will learn how to approach complex questions and answer them. Also, the NCERT Solutions for Class 11 Chemistry can be downloaded in PDF format by clicking the download button provided below.

    Download NCERT Solutions Class 11 Chemistry Chapter 3 PDF

    NCERT Solutions for Class 11 Chemistry Chapter 3: Classification of Elements and Periodicity in Properties

    Classification of Elements and Periodicity in Properties” is the third chapter in the NCERT Class 11 Chemistry syllabus. This chapter is considered by many to be of great importance since it covers concepts that are an important part of the term-wise CBSE Syllabus 2022-23 for Classes 11 & 12, as well as the syllabus for JEE and NEET.  The topics covered in this chapter include the following:

    Genesis of periodic classification

    Modern periodic law and the present form of the periodic table

    Nomenclatures of elements with atomic number greater than 100

    Electronic configurations of elements and the periodic table

    The s-block, p-block, d-block, and f-block elements

    Metals, non-metals and metalloids

    Periodic trends in properties of elements

    Trends in physical properties

    Trends in chemical properties

    Trends in chemical reactivity

    The NCERT Solutions for Class 11 Chemistry (Chapter 3) provided on this page feature the following types of questions.

    Questions on trivial systems for the classification of elements

    Questions on the modern periodic table and the nomenclature of elements with Z>100

    Problems based on quantum numbers and electron configurations

    Atomic/ionic radii, ionization enthalpy, electron affinity, electronegativity, and reactivity of elements and their trends

    It can be noted that the NCERT Solutions for Class 11 Chemistry Chapter 3 provided on this page have been prepared by experienced subject matter experts at BYJU’S. Therefore, students can rest assured that the NCERT Solutions provided on this page are extremely student-friendly and comprehensive. Moreover, a concept-focused approach has been followed in the preparation of these solutions, implying that these solutions can also be referred to during chapter revisions.

    Subtopics of NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties

    Why Do We Need to Classify Elements?

    Genesis of Periodic Classification

    Modern Periodic Law and the Present Form of the Periodic Table

    Nomenclature of Elements with Atomic Numbers > 100

    Electronic Configurations of Elements and the Periodic Table

    Electronic Configurations and Types of Elements: s-, p-, d-, f- blocks

    The s-block Elements

    The p-block Elements

    The d-block Elements (Transition Elements)

    The f-block Elements (Inner-transition Elements)

    Metals, Non-metals and Metalloids

    Periodic Trends in Properties of Elements

    Trends in Physical Properties

    Periodic Trends in Chemical Properties

    Periodic Trends and Chemical Reactivity

    Access the answers of NCERT Solutions for Class 11 Chemistry Chapter 3

    Q-1) What is the basic theme of organization in the periodic table?Ans.) The basic theme of organization in the periodic table is to classify the elements in periods and groups as per their properties. So, this course of action makes the study of elements and their compounds simple and systematic. In the periodic table, elements with similar properties are placed in the same group.Q-2) Which important property did Mendeleev use to classify the elements in his periodic table and did he stick to that?Ans.) Mendeleev organised the components in his periodic table according to the order of their atomic weight. He organized the components in groups and periods according to the increasing atomic weight. He placed the elements with similar properties in the same group.

    However, he did not stick to this arrangement for long. He discovered that if the elements were organized according to their increasing atomic weights, then some of the elements did not fit in with his scheme of classification.

    स्रोत : byjus.com

    NCERT Solutions for Class 11 Chemistry Chapter 3

    Free NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties solved by expert teachers from latest edition books and as per NCERT (CBSE) guidelines.Class 11 Chemistry Classification of Elements and Periodicity in Properties NCERT Solutions and Extra Questions with Solutions to help you to revise complete Syllabus and Score More marks.

    NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties

    NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties

    Topics and Subtopics in NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties:

    Section Name Topic Name

    3 Classification of Elements and Periodicity in Properties

    3.1 Why do we Need to Classify Elements ?

    3.2 Genesis of Periodic Classification

    3.3 Modern Periodic Law and the present form of the Periodic Table

    3.4 Nomenclature of Elements with Atomic Numbers > 100

    3.5 Electronic Configurations of Elements and the Periodic Table

    3.6 Electronic Configurations and Types of Elements: s-, p-, d-, f – Blocks

    3.7 Periodic Trends in Properties of Elements

    NCERT SolutionsClass 11 ChemistryChemistry Lab ManualChemistry Sample Papers

    NCERT TEXTBOOK QUESTIONS SOLVED

    Question 1. What is the basic theme of organisation in the periodic table?Answer: The basic theme of organisation of elements in the periodic table is to simplify and systematize the study of the properties of all the elements and millions of their compounds. This has made the study simple because the properties of elements are now studied in form of groups rather than individually.Question 2. Which important property did Mendeleev use to classify the elements in this periodic table and did he stick to that?Answer: Mendeleev used atomic weight as the basis of classification of elements in the periodic table. He did stick to it and classify elements into groups and periods.More Resources for CBSE Class 11

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    Question 3. What is the basic difference in approach between Mendeleev’s Periodic Law and the Modem Periodic Law?Answer: The basic difference in approach between Mendeleev’s Periodic Law and Modem Periodic Law is the change in basis of classification of elements from atomic weight to atomic number.Question 4. On the basis of quantum numbers, justify that the sixth period of the periodic table should have 32 elements.Answer: The sixth period corresponds to sixth shell. The orbitals present in this shell are 6s, 4f, 5p, and 6d. The maximum number of electrons which can be present in these sub¬shell is 2 + 14 + 6 + 10 = 32. Since the number of elements in a period corresponds to the number of electrons in the shells, therefore, sixth period should have a maximum of 32 elements.Question 5. In terms of period and group where will you locate the element with z = 114?Answer: Period – 7 and Group -14 Block-p.Question 6. Write the atomic number of the element present in the third period and seventeenth group of the periodic table.Answer: The element is chlorine (Cl) with atomic number (Z) = 17.Question 7. Which element do you think would have been named by (i)Lawrence Berkeley Laboratory (ii)Seaborg’s group?Answer: (i) Lawrencium (Lr) with atomic number (z) = 103

    (ii) Seaborgium (Sg) with atomic number (z) = 106.

    Question 8. Why do elements in the same group have similar physical and chemical properties?Answer: The elements in a group have same valence shell electronic configuration and hence have similar physical and chemical properties.Question 9. What does atomic radius and ionic radius really mean to you?Answer:  Atomic radius. The distance from the centre of nucleus to the outermost shell o electrons in the atom of any element is called its atomic radius. It refers to both covalen or metallic radius depending on whether the element is a non-metal or a metal.Ionic radius. The Ionic radii can be estimated by measuring the distances between cations and anions in ionic crystals.Question 10.  How do atomic radius vary in a period and in a group? How do you explain the variation?Answer: Within a group Atomic radius increases down the group.Reason. This is due to continuous increases in the number of electronic shells or orbit numbers in the structure of atoms of the elements down a group.Variation across period.Atomic Radii. From left to right across a period atomic radii generally decreases due

    to increase in effective nuclear charge from left to right across a period.

    Question 11. What do you understand by isoelectronic species? Name a species that tvill be iso electronic with each of the following atoms or ions.

    स्रोत : www.learncbse.in

    CBSE Class 11 Chemistry Chapter 3 NCERT Solutions Free PDF Download

    Click here to download the NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties. Learn the solutions to ace your Class 11 Chemistry exam.

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    NCERT Solutions for Class 11 Chemistry Chapter 3 - Classification of Elements and Periodicity in Properties

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    Understand the concepts covered in the chapter Classification of Elements and Periodicity better with NCERT Solutions for Class 11 Chemistry Chapter 3. The solutions include all the crucial topics with detailed explanations. By referring to the Class 11 Chemistry Chapter 3 NCERT Solutions, students will learn how the modern periodic table came into being and the periodic law.

    Students who are preparing for their Class 11 exams should go through these NCERT Solutions to score good marks in the exam. The solutions solved by expert teachers can help them learn how to approach and solve the questions in the exam.

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    Access NCERT Solutions for Science Chapter 3 – Classifications of Element and Periodicity

    1. What is the basic theme of organisation in the periodic table?

    Ans :

    The primary idea of the periodic table's organisation is to organise elements into periods and groups based on their qualities. This arrangement simplifies and organises the study of elements and their compounds. Elements with comparable characteristics are grouped together in the periodic table.

    2. Which important property did Mendeleev use to classify the elements in his periodic table and did he stick to that?

    Ans :

    In his periodic chart, Mendeleev organised the elements by atomic weight or mass. In order of increasing atomic weight, he divided the elements into periods and groups. He grouped elements that have comparable qualities together. He did not, however, keep this arrangement for long. He discovered that if the elements were ordered strictly in order of increasing atomic weights, several of them would not fit into this classification scheme.

    स्रोत : www.vedantu.com

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