@aspire.coaching.a: Welcome to Aspire Coaching Academy. In this video you will learn about grade 9th Chemistry Chapter number 03 Periodic table History Elemental classification Modern periodic table Periodicity Of Properties such as Atomic radius Covalent and ionic radii Ionization energy Electron affinity Shielding effect Electronegativity and their trends in periodic table. 👉 Follow for more easy content! or join our Whatsapp channel👇👇👇👇 https://whatsapp.com/channel/0029Vb7uiP0AYlUNkzs66y0o 03434506679 #Aspire_Coaching_Academy #Malakand #creatorsearchinsights #chemistrynotes #notes