Hi i am Muazzam Mirza Welcome to my youtube channel Chemistry Wallah - Muazzam Mirza. About this video- TOPIC: Periodic Trend In Physical Properties (Ionization Energy) This lectures is specially recorded for students of 12th class. 12th class of all Punjab boards and is based on the current curriculum of study for chemistry. All these lectures are conducted in Urdu/English medium to facilitate Pakistani students. Thank you so much..... ........................................................................................... Our Social Links- Follow me on Youtube www.youtube.com/channel/UC1yG... Follow me on Facebook www.facebook.com/profile.php?... Follow me at Instagram @muazzam_mirza_official Email: www.muazzammirza48@gmail.com