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 ...

Over time these gaps have gradually been filled in as scientists unearthed new elements. For instance ... line in the diagram of the periodic table above separates the metals, on the left, from ...

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

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

Can you believe the periodic table has been around for over 150 years? Take this quiz to see if you can find the elements. What information do we collect from this quiz? The periodic table is a ...

In 1879, he became Chair of Chemistry at the new Firth College in Sheffield where he oversaw the fitting up ... Up until this point the atomic number simply referred to an element’s positioning in the ...

The new scale uses electronegativity as a dimensionless quantity, which is very practical and accurately reproduces both molecules' energies and chemical reactions. The periodic table's most ...

The periodic table of elements (often known simply as the periodic table) has been helping scientists with their work for a little over 150 years. The handy visual reference guide organizes known ...

National Periodic Table Day, observed annually on February 7, honors one of the most significant achievements in scientific ...

A chemical element is one of those squares on the periodic table that adorns many a classroom ... We'll also keep you up to date with New Scientist events and special offers.

When the first periodic table was formulated by Mendeleev ... Various chemical analyses by the Italian team revealed a new element, which could be extracted by boiling with sodium hydroxide ...