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5. Periodic Classification of Elements Science class 10 in English Medium ncert book solutions Additional Questions With Solutions
5. Periodic Classification of Elements Additional Questions With Solutions – Complete NCERT Book Solutions for Class 10 Science (English Medium). Get all chapter explanations, extra questions, solved examples and additional practice questions for 5. Periodic Classification of Elements Additional Questions With Solutions to help you master concepts and score higher.
5. Periodic Classification of Elements Science class 10 in English Medium ncert book solutions Additional Questions With Solutions
NCERT Solutions for Class 10 Science play an important role in helping students understand the concepts of the chapter 5. Periodic Classification of Elements clearly. This chapter includes the topic Additional Questions With Solutions, which is essential from both academic and examination point of view. The solutions provided here are prepared strictly according to the latest NCERT syllabus and follow the guidelines of CBSE to ensure accuracy and relevance. Each question is explained in a simple and student-friendly manner so that learners can grasp the concepts without confusion. These NCERT Solutions are useful for regular study, homework help, and exam preparation. All textbook questions are solved step by step to improve problem-solving skills and conceptual clarity. Students of Class 10 studying Science can use these solutions to revise important topics, understand difficult questions, and practise effectively before examinations. The chapter 5. Periodic Classification of Elements is explained in a structured way, making it easier for students to connect the theory with the topic Additional Questions With Solutions. By studying these updated NCERT Solutions for Class 10 Science, students can build a strong foundation, boost their confidence, and score better marks in school and board exams.
5. Periodic Classification of Elements
Additional Questions With Solutions
Additional Questions With Solutions
Question 1. Write the main features of Mendeleev's periodic table.
Answer: Mendeleev arranged the elements in a horizontal row in the order of their increasing atomic mass. Elements with similar properties were placed in all the vertical pillars. Following are the main features of this table:-
(a) Groups and Subgroups:- There are 8 groups in the periodic table. Groups I to VII are divided into two subgroups.
(b) The number of periods in the periodic table is 7 which are known as 1,2,3,4,5,6 and 7.
1st period - 2 elements
Second Period - 8 Elements
Third Period - 8 Elements
Fourth Period - 18 Elements
Fifth Period - 18 Elements
Sixth Period - 32 Elements
seventh period - incomplete period
Question 2: Write some characteristic features of the periodic table.
Answer: Some of the distinctive features of the periodic table are as follows:-
(i) Elements are placed in a special way in groups and periods than before.
(ii) The properties of many elements were inferred from this type of classification.
(iii) The atomic masses of many elements were modified.
(iv) The possibility of discovery of new elements increased and new elements were also discovered.
Question 3 - Differentiate between modern periodic table and Mendeleev's periodic table.
Answer -
Modern periodic table
1. Elements are arranged in increasing atomic number.
2. This periodic table has 18 vertical columns and 7 horizontal rows.
3. Isotopes of elements are placed at the same place as their corresponding elements because they have the same atomic number.
4. Chemically dissimilar elements are kept in separate groups.
Mendeleev's periodic table
1. Elements are arranged in increasing atomic masses.
2. This periodic table has 8 vertical columns and 6 horizontal rows.
3. The isotopes of the elements are not found in proper positions.
4. Chemically dissimilar elements held together.
See other sub-topics of this chapter:
1. Chapter Review 2. Text-book Questions 3. Exercise 4. Additional Questions With Solutions 5. Additional Questions With Solutions