Simply Explaination about the "Isotopes and Isobars" and how they give the difference in atomic masses of same element and the then how calculate average actual atomic mass of these element with Isotopes and about Isobars and the full explanation about it and many more about it by this Audio Podcast, we will share this all abouts the 4th Chapter of our Class 9th and that mainly include in Chemistry but in text combined and we take the reference topics from our NCERT text books and it's presented by "Srj Science Hub", an Educational branch of Srj Group founded by Suraj Singhaniya whom abbreviation named as "Srj".