The document discusses the development of the periodic table and key concepts related to organizing the elements. It describes how Lavoisier compiled the first list of elements in the 1700s and how Newlands noticed patterns in properties when elements were arranged by atomic mass in the 1800s. The periodic table arranges elements based on atomic number and groups elements with similar properties together. Elements are classified as metals, non-metals, and metalloids based on their physical and chemical properties. The position of an element on the periodic table reveals information about its electron configuration and properties like atomic radius and ionization energy.

4. Section 6-1

12. Section 6-2 Organizing the Elements by Electron Configuration (cont.)

13. Section 6-2

20. Section 6-3 Atomic Radius (cont.)

27. Section 6-3 Ionization Energy (cont.)