Basics of Chemistry | PART 1 | Atomic Structure

#chemistry basics for all prep. & sec. grades PART 1 (Atomic structure) Atom Atomic number Mass Number Element symbol you can join us online on zoom*_/ _*platform --------- OFFICIAL ACCOUNTS ------------- FACEBOOK   / chemist.shorouk.shaaban   INSTAGRAM   / chemist.shoroukshaaban   ______________________________________ Contact & Support: WHATSAPP https://wa.me/201014534452