NCERT Solutions for Class 10 Science Chapter 5 - Periodic Classification of Elements

 

NCERT Solutions for Class 10 Science Chapter 5 - Periodic Classification of Elements: In this chapter, you will study the periodic table and classification of the elements. Elements are classified on the basis of similarities in their properties. Döbereiner grouped the elements into triads and Newlands gave the Law of Octaves. Mendeléev arranged the elements in increasing order of their atomic masses and according to their chemical properties. Mendeléev even predicted the existence of some yet to be discovered elements on the basis of gaps in his Periodic Table. Anomalies in the arrangement of elements based on increasing atomic mass could be removed when the elements were arranged in order of increasing atomic number, a fundamental property of the element discovered by Moseley. Elements in the Modern Periodic Table are arranged in 18 vertical columns called groups and 7 horizontal rows called periods.

Here are the important Topics of NCERT Class 10 Science Chapter 5 - Periodic Classification of Elements mentioned below:

5.1 Making Order Out of Chaos - Early attempts in the Classification of Elements

    5.1.1 Dobereiner's Triads

    5.1.2 Newland's Law of Octaves

5.2 Making Order Out of Chaos - Mendeleev's Periodic Table

    5.2.1 Achievements of Mendeleev's Periodic Table

    5.2.2 Limitations of Mendeleev's Classification

5.3  Making Order Out of Chaos - The Modern Periodic Table

    5.3.1 The Position of Elements in the Modern Periodic Table

    5.3.2 Trends in the Modern Periodic Table

The NCERT Class 10 Science Chapter 5 - Periodic Classification of Elements will also tell you Non-metals are electronegative. They tend to form bonds by gaining electrons. Let us learn about the variation of this property. As the trends in the electronegativity show, non-metals are found on the right-hand side of the Periodic Table towards the top. These trends also help us to predict the nature of oxides formed by the elements because it is known to you that the oxides of metals are basic and that of non-metals are acidic in general.

After going through this chapter, you must be able to get the NCERT Solution of these questions which are mentioned below, as these questions are from NCERT.

Q1. Nitrogen (atomic number 7) and phosphorus (atomic number 15) belong to group 15 of the Periodic Table. Write the electronic configuration of these two elements. Which of these will be more electronegative? Why?

Q2. How does the electronic configuration of an atom relate to its position in the Modern Periodic Table?

Q3. In the Modern Periodic Table, calcium (atomic number 20) is surrounded by elements with atomic numbers 12, 19, 21 and 38. Which of these have physical and chemical properties resembling calcium?

If you have any doubt in solving these questions or unable to answer them correctly then, don't worry NCERT Solutions for Class 10 Science Chapter 5 - Periodic Classification of Elements is there for you. Here you will get all the NCERT Solutions.

NCERT Solutions for Class 10 Science Chapter 5 - Periodic Classification of Elements- Solutions

 

NCERT Solutions for Class 10 Science - Chapter wise

Chapter No.

Chapter Name

Chapter 1

Chemical Reactions and Equations

Chapter 2

Acids, Bases, and Salts

Chapter 3

Metals and Non-metals

Chapter 4

Carbon and Its Compounds

Chapter 5

Periodic Classification of Elements

Chapter 6

Life Processes

Chapter 7

Control and Coordination

Chapter 8

How do Organisms Reproduce?

Chapter 9

Heredity and Evolution

Chapter 10

Light Reflection and Refraction

Chapter 11

The Human Eye and The Colorful World

Chapter 12

Electricity

Chapter 13

Magnetic Effects of Electric Current

Chapter 14

Sources of Energy

Chapter 15

Our Environment

Chapter 16

Sustainable Management of Natural Resources

 

NCERT Solutions for Class 10 - Subject Wise

NCERT Solutions for Class 10 Maths

NCERT Solutions for Class 10 Science

 

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