Page 1: The Modern Periodic Table

This page presents a comprehensive tableau périodique complet showing all known chemical elements. The table is organized systematically with detailed atomic masses and element classifications.

Definition: The periodic table arranges chemical elements by increasing atomic number and similar chemical properties in columns (groups) and rows (periods).

Vocabulary: Atomic mass - the weighted average mass of an atom of an element, expressed in atomic mass units (amu).

Example: Hydrogen (H) has an atomic mass of 1.007975, while Gold (Au) has a significantly higher atomic mass.

Highlight: The table distinguishes between different element categories through color coding: métaux de transition (transition metals), alkali metals, metalloids, and non-metals.

Definition: Les métaux de transition are elements in the d-block of the periodic table, occupying groups 3-12.

The table includes important details such as:

• Element symbols and atomic numbers
• Precise atomic masses with uncertainty values
• Classification of elements into major categories
• Both naturally occurring and synthetic elements
• Special sections for lanthanides (elements 57-71) and actinides (elements 89-103)

This version of the periodic table is particularly useful for physique-chimie terminale and advanced chemistry studies, providing comprehensive information about element properties and classifications.