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 United Nations have proclaimed 2019 to be the International Year of the Periodic Table of Chemical Elements (IYPT 2019) to mark the 150th anniversary of the classification system that decorates ...

The element 112 has been officially recognized as a new element by the International Union of Pure and Applied Chemistry (IUPAC). IUPAC confirmed the recognition of element 112 in an official letter ...

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Mendeleev’s chemical grid system defined our world – and the rarer elements it classifies are vital to modern life This year marks the 150th anniversary of the publication of the first periodic table.

A century and a half ago, a Russian chemistry professor published a classification of all the known elements, organized by atomic weight. Today, the system that he created for his students — plus some ...

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A computer graphic shows how the collision of calcium ions and berkelium atoms produces atoms of Element 117. (Credit: University of California Television) The scientific body in charge of chemistry’s ...