But how many of these elements do you know? Test your knowledge and compete with other Live Science readers to see who can ...

The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

The periodic table is like a map that organizes elements based on their atomic structure and properties. It helps scientists and students study and understand the vast variety of elements and how ...

AS A HARD, shiny, and tough-to-melt bunch, metals are desirable as jewelry ... tour of some of the most extreme substances on the periodic table. Densest: Osmium Element No. 76 is the heavyweight ...

This year marks the 150th anniversary of the publication of Mendeleev’s Periodic Table of Chemical Elements in 1869. In celebration, the United Nations Educational, Scientific, and Cultural ...