Since then, the periodic table has evolved to reflect over 150 years of scientific development and understanding in chemistry and physics. Today, with 118 known elements, it is widely regarded as one ...

A 24-year-old Australian man could go to jail for ten years as he prepares to plead guilty for importing plutonium from a ...

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

So how has the periodic table been put together ... Each square in the table contains an element symbol of one or two letters, not the element name. This makes it less cluttered and easier ...

All the different elements are arranged in a chart called the periodic table. A Russian scientist called Dmitri Mendeleev produced one of the first practical periodic tables in the 1869.

More than 75 years after its initial discovery, scientists have created an organometallic molecule containing the ...

Two years later, Julius Lothar Meyer and William Odling independently published their own versions of a periodic table. Meyer’s table was comprised of 44 elements arranged by valency; Odling’s version ...

A chemical element is one of those squares on the periodic table that adorns many a classroom wall. Sure. But what is an element really? It is a more subtle question that you might realise.

Electronegativity, an essential characteristic of all elements in the periodic table, measures an atom's ability to attract electrons towards ... Yet Pauling's scale is the first and the most common ...

Scientists have found that our bodies need 28 different elements to function properly. These are almost one-quarter of the periodic table and are mainly found in the first four periods.