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 organizes chemical elements based on atomic weight, electron configurations, and chemical properties, ...

Some elements are desperate to do that and they are very reactive; others, like the noble gases or gold or platinum, not so much. What about taking all the stable elements and mushing them together?

and all the elements in group 0 are unreactive non-metals. The zigzag, staircase, line in the diagram of the periodic table above separates the metals, on the left, from non-metals, on the right.

Graphene could one day be involved in a new definition of the kilogram. To the left of gold in the periodic table are two elements — platinum and iridium — that are just as interesting in many ...

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 ...