Lecture
This lecture covers the periodic trends of ionization energy, electron affinity, and electronegativity. Starting with the energy required to form an ion, it explores how ionization energy varies across periods and groups. The discussion then moves to electron affinity, highlighting its importance in predicting element properties. The lecture also delves into the concept of electronegativity, explaining its role in determining the electro-attracting power of atoms in chemical bonds. By the end, the instructor recaps the periodic trends, emphasizing the contrasting characteristics of non-metals and metals in terms of ionization energy, atomic radius, and electron affinity.