Lesson 1: The Modern Periodic Table
This initial lesson sets the foundation for the entire chapter. It begins by introducing the Modern Periodic Law, which states that the physical and chemical properties of elements are a periodic function of their atomic numbers. This is a crucial concept that explains the arrangement of the elements. Students will learn about the structure of the modern periodic table, including the periods (horizontal rows) and groups (vertical columns). A key part of this lesson is understanding the different blocks: s, p, d, and f-blocks, based on the subshell to which the last electron enters. This classification is vital for predicting the general properties of an element.
- Key Topics:
- Modern Periodic Law
- Structure of the periodic table: periods and groups
- Classification of elements into s, p, d, and f-blocks
- Nomenclature of elements with atomic numbers greater than 100
