This site has a periodic table on it. When you click on each element, it brings up information about it. Site is organized, detailed, and helpful for learning.

Discusses the history and organization of the periodic table, where the metalloids fit in, and their properties. Includes color-coded periodic table of elements.

Provides information on the development of the periodic table under the following sections: In the Beginning, Law of Triads, First Attempts At Designing a Periodic Table, Law of Octaves, Who Is the Father of the Periodic Table?,...

The modern periodic table has evolved over a long period of time as new discoveries have been made. Learn about the contributions made by different scientists to its development.

Explains how Dmitri Mendeleev created the periodic table of elements, how it was organized, the changes made by Henry Moseley in 1931, some characteristics of element groups, and what the atomic mass, number, and abbreviation each...

An article investigating the life and work of Dmitri Mendeleev.

The periodic table was laid out using valences or the electrons in the outermost shell.

This overview of the life and accomplishments of chemist Dmitri Mendeleev discusses his upbringing and education. It also provides details on his creating the Periodic Table and his presentation to the Russian Chemical Society.

A history and description of the modern periodic table, including its early origins, many contributors and later additions.

A brief outline of Mendeleev's life from PBS. Not much information, but does hit upon the highlights of his life.

This biography on scientist Dmitri Mendeleev details his childhood, gives information on his scientific studies, and discusses his formal presentation made to the Russian Chemical Society in which he detailed his findings on elements.

Overview of Mendeleyev's life and how his peers were at first skeptical when he formulated his periodic table.

Wikipedia provides the definition of the term, "Atomic number," a term used in chemistry and physics to represent the number of protons in the nucleus of an atom.