Chapter 5, Periodic Classification of Elements, NCERT Grade 10 Science CBSE belongs to the Theme I and Unit Chemical Substances- Nature and Behaviour. The solutions given to the questions for the in-between exercises and exercises are given at the end of the chapter are prepared by our subject matter experts in a simple and precise manner.We have learned that matter around us is present in the form of elements, compounds, and mixtures in the previous classes. Students are thus, aware of the fact that elements contain atoms of the only type. However, Chapter 5 of NCERT Grade 10 Science CBSE takes the students to further into the depths of classification and organisation of these elements.
In this chapter, Periodic Classification of Elements, students will learn about the attempts to classify the elements resulting in grouping the elements into metals and non-metals. This topic is given under the head of making order out of chaos – early attempts at the classification of elements which is further divided into Döbereiner’s Triads, Newlands’ Law of Octaves, The subtopics such as Achievements of Mendeléev’s Periodic Table and Limitations of Mendeléev’s Classification further explain the concept and challenges faced by Mendeleev . These topics are accompanied by elaborative Periodic table and interactive activities. The solutions to the questions for in between exercises will help the students to understand the concept better.
Wonderful explanation of the topic making order out of chaos – the modern periodic table will be learnt in this chapter with the help of elaborative Modern Periodic Table.In the chapter, Periodic classification of elements, students will also learn the Position of elements in the modern periodic table depending on various factors such as the number of valence electrons, number of valence shells, etc. The topic trends in The Modern Periodic Table describes about important concepts such as valency, atomic size, metallic and non-metallic properties.
Solutions are given for the revision questions given under the heads of different activities and in between exercises further help in reinforcing the concept to the learner and will help them in scoring well in the exams.This chapter is a part of Unit I, Chemical Substances- Nature and Behaviour of NCERT Grade 10 Science CBSE and holds a weightage of 25 marks in the final examination.Get 100 percent accurate NCERT Solutions for Class 10 Science Chapter 5 (Periodic Classification of Elements) explained by expert Science teachers. We provide step by step solutions for the questions given in Class 10 Science textbook as per CBSE Board guidelines from the latest NCERT book for Class 10 Science. The topics and sub-topics in Chapter 5 Periodic Classification of Elements are given below.
Ex 5.1 - MAKING ORDER OUT OF CHAOS – EARLY ATTEMPTS AT THE CLASSIFICATION OF ELEMENTS
Ex 5.1.1 - Döbereiner’s Triads
Ex 5.1.2 - Newlands’ Law of Octaves
Ex 5.2 - MAKING ORDER OUT OF CHAOS – MENDELÉEV’S PERIODIC TABLE
Ex 5.2.1 - Achievements of Mendeléev’s Periodic Table
Ex 5.2.2 - Limitations of Mendeléev’s Classification
Ex 5.3 - MAKING ORDER OUT OF CHAOS – THE MODERN PERIODIC TABLE
Ex 5.3.1 - Position of Elements in the Modern Periodic Table
Ex 5.3.2 - Trends in the Modern Periodic Table.
We cover all exercises in the chapter given below:-
EXERCISE 5.1 - 3 Questions with Solutions
EXERCISE 5.2 - 4 Questions with Solutions
EXERCISE 5.3 - 6 Questions with Solutions
EXERCISE 5.4 - 10 Questions with Solutions.
Other than given exercises, you should also practice all the solved examples given in the book to clear your concepts on Periodic Classification of Elements. Download the free PDF of Chapter 5 Periodic Classification of Elements and take the print out to keep it handy for your exam preparation.