9th Chemistry chapter 2 CRQs | Atomic structure | new book 2025

In this video, we discuss the constructed response questions from Chapter 2, "Atomic Structure," of the 9th Class Chemistry (PTB, 2025 Edition). The questions explained in detail are:

https://youtube.com/playlist?list=PLmDjo4QO8SXNRbuscJHOsM6PH0Uh1GlsX&si=T5BxWoNLX8_zY6Na

https://youtube.com/playlist?list=PLmDjo4QO8SXPfJFh_-7h-b3CwWsJDMmI6&si=nr_ZDl3MNprNVQCs

00:00 Introduction
0:10 Why does the energy of an electron increase as we move from the first shell to the second shell?
1:22 Why is it needed to lower the pressure of the gas inside the discharge tube?
2:27 What is the classical concept of an electron? How has this concept changed with time?
3:40 Why are the nuclei of radioactive elements unstable?
4:40 During discharge tube experiments, how did scientists conclude that the same type of electrons and protons are present in all elements?

This video provides clear explanations, making it easy for students to prepare for exams. Don't forget to like, share, and subscribe to "The Lecturer Group" for more educational content!
#chemistryclass9
Atomic Structure, Chapter 2 Chemistry, 9th Class Chemistry, Constructed Response Questions

Видео 9th Chemistry chapter 2 CRQs | Atomic structure | new book 2025 канала The Lecturer Group