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Periodic Table

Learn what the periodic table is and how it is used to arrange the chemical elements in a logical order.

Periodic Table of the Elements
This handy table is from your About Guide. Check back often for additional facts and figures.

Who Invented the Periodic Table?
Do you know who described the first periodic table of the elements that ordered the elements by increasing atomic weight and according to trends in their properties? I'll give you a hint. It was not Dmitri Mendeleev. The actual inventor of the periodic table is someone rarely mentioned in chemistry history books.

Periodic Table Study Guide
Learn about the periodic table of the elements. Find out about the history of the periodic table, how the elements are organized, and how to use the periodic table to predict the behavior of unfamiliar elements.

Introduction to the Periodic Table
Learn how the periodic table of the elements is structured. Get basic history about its development and learn how periods and groups relate to electrons and atomic mass.

Javascript Periodic Table of the Elements
This is an interactive javascript periodic table of the elements. Click on an symbol on the periodic table to get facts about the element.

Printable Periodic Table of the Elements
Download or print these periodic tables to help work chemistry problems or to predict properties of the elements.

Memorize the Elements
Here is a mnemonic to help you memorize the first twenty elements in the periodic table.

Periodic Table Quiz
This multiple choice quiz tests your understanding of the periodic table. The quiz examines the organization of the periodic table and how it can be used to predict trends in element properties.

Mendeleev's Periodic Table of the Elements
See what Dmitri Mendeleev's original periodic table of the elements looked like. Blank spaces predict the existence of elements that hadn't been discovered.

Mendeleev's Periodic Table of the Elements
This is the English translation of Dmitri Mendeleev's periodic table of the elements.

Periodic Table of the Elements for Kids
This table was made with kids and homework in mind. It includes element groups and periods, element symbols, atomic numbers, atomic weights, and links to detailed facts for each element.

Printable Periodic Tables
Sometimes it's nice to have a paper version of the periodic table of the elements that you can refer to when working problems or doing experiments in the lab. This is a collection of periodic tables that you can print and use.

Element Types - Chemistry of Groups
Learn the locations of element types on the periodic table and get summaries of the defining characteristics of element groups, such as alkaline earths, noble gases, halogens, etc.

How to Use a Periodic Table
The periodic table of the elements contains a wide variety of information such as element symbols, atomic number and atomic mass is most common, but the periodic table can contain even more data than previously expected. This will show you how to use a periodic table to gather information about the elements.

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