It is notes of classification of elements and periodicity in properties

These notes provide a complete and well-organized textual explanation of the chapter Classification of Elements and Periodicity in Properties. The content is written in a simple, clear, and exam-oriented manner, making it useful for quick learning and revision. Topics Included: Classification of elements based on: Electronic configuration Chemical properties Modern periodic table Ionization enthalpy Electron gain enthalpy Electronegativity Oxidation states Atomic radius and periodic variations Variation in transition elements Metallic and non-metallic character Acidic and basic nature of oxides Valency and periodic trends Chemical reactivity trends Anomalous properties of second period elements Diagonal relationship Effective nuclear charge Shielding effect ns and np orbital electrons d and f electron effects Important graphs, trends, and additional explanations