The Fundamentals of Chemistry | Chemistry Basics | Mass Number | Atomic Number

In this video, you'll get some fundamental knowledge about chemistry. We will also talk about how to calculate atomic number and mass number of any element.
Study material:
https://drive.google.com/file/d/1kHk1z0tx1jwSkI932UAFHur79cPhdUAx/view?usp=drivesdk