Class 10 Science Chapter 5 Solution – Periodic Classification of Elements | SEBA Assam

SEBA Class 10 Science Chapter 5 – Periodic Classification of Elements Solutions & Summary

Struggling with Class 10 Science Chapter 5 – “Periodic Classification of Elements”? Ospin Academy provides comprehensive NCERT solutions, key concepts, and practice questions to help you excel in your exams.

📖 Chapter Overview:

This chapter explains the historical development of periodic tables, modern periodic law, and the classification of elements based on atomic number.

📌 Key Topics Covered:

  • Dobereiner’s Triads
  • Newlands’ Law of Octaves
  • Mendeleev’s Periodic Table
  • Modern Periodic Law and Table
  • Periodic Trends – Valency, Atomic Size, and Properties

📌 Important Questions for Exams:

  • State Mendeleev’s Periodic Law with its merits and limitations.
  • Describe Newlands’ Law of Octaves and its drawbacks.
  • Explain the trends in atomic size across a period and down a group.
  • Define periodicity and its importance in chemistry.
  • What is the significance of the Modern Periodic Table?

📝 How Ospin Academy Helps:

  • Detailed NCERT solutions for SEBA syllabus
  • Exam-oriented practice questions
  • Concept clarity with FAQs
  • Quick revision notes for better retention

Access SEBA Class 10 Science Chapter 5 – “Periodic Classification of Elements” solutions now on Ospin Academy!

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Periodic Classification of Elements
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Note – If you find any mistakes in this chapter, please let us know or correct them yourself while reading. Thank you!
SEBA Class 10 Science Chapter 5 – Periodic Classification of Elements FAQs
What is the Modern Periodic Law?
Modern Periodic Law states that the properties of elements are periodic functions of their atomic numbers.
What are Dobereiner’s Triads?
Dobereiner grouped elements into triads where the atomic mass of the middle element was the average of the other two.
Why was Newlands’ Law of Octaves not widely accepted?
Newlands’ Law was limited because it only applied to lighter elements and failed for elements beyond calcium.
What are periodic trends in the periodic table?
Periodic trends include variations in atomic size, valency, electronegativity, and metallic properties across periods and groups.
How does atomic size change across a period and down a group?
Atomic size decreases across a period due to increased nuclear charge and increases down a group due to added electron shells.
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