NCERT Solutions for Class 9 Science Chapter 4 The Structure of Atom

NCERT Solutions for Class 9 Science Chapter 4 Structure of The Atom: The CBSE Class 9 Science chapter 4 is The Structure of Atom. In this chapter, students will learn about charged particles in matter, the structure of an atom, how electrons are distributed in different orbits, valency, atomic number and mass number, isotopes, etc.

Embibe’s Solutions for Class 9 Science chapter 4 will help students write comprehensive answers for work on the concepts they find difficult. It offers around 2500 questions for practice. Structure of Atoms is an important chapter for students as it will help them build a base for concepts based on it in higher classes. Scroll down to learn more.

NCERT Solutions for Class 9 Science Chapter 4: Important Topics

In this chapter, students will learn about the basic terms of studying an atom, such as atomic number, atomic mass, neutrons, and valency. They will also learn about the different atomic models, their features, and their limitations. The study will start with charged particles in matter, followed by the basic structure of an atom.

Chapter 4 of Science Class 9 deals with the discovery and structure of an atom. Moreover, students will learn the work of famous scientists who developed various models and theories. Before getting into the details of the structure of atom Class 9 NCERT solutions, let us have a look at the topics and sub-topics in this chapter:

Section	Topic Name
4.1	Charged Particles In Matter
4.2	The Structure of An Atom
4.3	How Are Electrons Distributed In Different Orbits (Shells)?
4.4	Valency
4.5	Atomic Number and Mass Number
4.6	Isotopes

NCERT Solutions for Class 9 Science Chapter 4: Points to Remember

While studying, the important points to remember from CBSE Class 9 Science Chapter 4 are as follows:

Goldstein discovered the proton, whereas J.J. Thomson discovered electrons.
Valency is defined as an atom’s total capacity.
Because of their stable electronic configuration, inert gases do not participate in chemical bonding.
An element’s atomic number is equal to the number of electrons or protons in the neutral atom.
Isotopes are atoms with different mass numbers of the same element.
Isobars are atoms with the same mass number but different atomic numbers from different elements.
Elements are distinguished by the number of protons or electrons they contain.