Summary The Periodic Table of Elements: Structure, Trends, and Properties Overview
Description of period table The periodic table is a structured arrangement of all known chemical elements, designed to show patterns in their properties and behavior. It is one of the most important tools in Chemistry. What is the Periodic Table? The periodic table organizes elements based on their atomic number (the number of protons in an atom). It was first developed by Dmitri Mendeleev in 1869, who arranged elements by their atomic mass and predicted undiscovered elements. Structure of the Periodic Table 1. Periods (Rows) Horizontal rows are called periods. There are 7 periods in total. Elements in the same period have the same number of electron shells. 2. Groups (Columns) Vertical columns are called groups. There are 18 groups. Elements in the same group have similar chemical properties and the same number of valence electrons.
Información del documento
- Año escolar
- 1
- Subido en
- 23 de marzo de 2026
- Número de páginas
- 34
- Escrito en
- 2025/2026
- Tipo
- Resumen
