Periodic Table of Elements

Explore All 118 Chemical Elements

The Periodic Table of Elements is an interactive reference for exploring all 118 known chemical elements. Search elements by name, symbol, or atomic number, compare their properties, and discover important information including atomic mass, electron configuration, electronegativity, oxidation states, atomic radius, ionization energy, and more.

Used by students, teachers, researchers, and science enthusiasts around the world, the periodic table provides a structured view of the elements that make up our universe. From hydrogen and helium to the newest superheavy elements, it reveals the patterns and relationships that underpin chemistry, physics, and materials science.

Whether you are studying for an exam, researching a particular element, or simply curious about the building blocks of matter, this interactive periodic table offers a convenient way to explore chemical data, periodic trends, and atomic structure in a single place.

A Map of the Chemical World

The periodic table organizes elements according to their atomic number and electron structure. As elements are arranged into rows and columns, recurring patterns emerge that help explain their physical and chemical behavior.

These patterns allow scientists to understand why elements react differently, why some form stable compounds while others remain largely inert, and how atomic structure influences the properties of matter.

Discover the Elements

Each element contains a unique combination of characteristics and plays a role in the natural world.

Explore information such as:

• Atomic number
• Atomic mass
• Chemical symbol
• Electron configuration
• Electron shells
• Oxidation states
• Electronegativity
• Atomic radius
• Ionization energy
• Density
• Melting and boiling points
• Discovery history
• Natural occurrence

Whether you are comparing neighboring elements or examining a single atom in detail, the periodic table serves as a gateway to understanding the fundamental components of matter.

Patterns and Trends

One of the greatest strengths of the periodic table is its ability to reveal relationships between elements.

As you explore the table, you can observe trends in atomic size, reactivity, metallic character, electronegativity, electron affinity, and ionization energy. These patterns help explain the behavior of elements and provide insight into the principles that govern chemical reactions.

Families of Elements

The elements are commonly divided into groups with shared characteristics, including:

• Alkali metals
• Alkaline earth metals
• Transition metals
• Post-transition metals
• Metalloids
• Nonmetals
• Halogens
• Noble gases
• Lanthanides
• Actinides

Each family contributes to a deeper understanding of chemistry and the diverse ways elements interact throughout nature.

A Tool for Learning and Exploration

For more than a century, the periodic table has served as one of science’s most powerful organizational tools. It remains essential in education, research, engineering, medicine, and industry.

By bringing together detailed element data, atomic properties, and periodic trends, this interactive table makes it easier to explore the remarkable diversity of the chemical elements and the underlying order that connects them.

About

About the Periodic Table

The Periodic Table of Elements is an arrangement of all known chemical elements ordered by increasing atomic number, electron configurations, and recurring chemical properties. Each element is represented by a unique chemical symbol, an abbreviation that stands for the element’s name (e.g., H for hydrogen, O for oxygen, etc.).

The table is structured in rows called periods and columns known as groups or families, grouping elements with similar properties and allowing us to predict the characteristics of elements based on their position. The Periodic Table of Elements is one of the most essential tools in science, widely used by chemists, students, and researchers worldwide. With its organized display of chemical elements, this tool enables us to understand atomic structure, chemical properties, and reactivity, providing foundational insights into the makeup of matter.

History

The modern periodic table traces its origins to Dmitri Mendeleev in 1869, who arranged the elements by atomic mass and recognized repeating patterns, known as periodic law. This work laid the foundation for future scientists to refine the table using atomic numbers, leading to the version we use today. Mendeleev’s early version also predicted elements that were yet to be discovered, for the structure he envisioned had a few suspicious gaps in the order of the atomic numbers.

Cover photo by Vedrana Filipović on Unsplash