What is atomic and mass numbers || diffrence b/w atomic mass and mass number || #9thclasschemistry

Asalam-o-Alikum dear students and viewer's wellcome to my you tube channel my name is masood Masood Ahmad. in this lecture you can learn about atomic number and mass number. How to find atomic number and mass number if number of protons electrons and neutrons are given. Difference between atomic mass and mass number. #chemistry #basicconceptofmasoodchemist #9thclasschemistry #fundamentalofchemistry #introduction #definition #atom #structure #unacademy #atomicnumber #massnumber #atomicmass Masood Ahmad