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 looks complete ... Japan has unexpectedly taken the lead in this race to discover a new element. Riken’s lead physicist on the project, Kosuke Morita, needed all the luck ...

Copper has been used by humans for as much as 7000 years and elements such as gold, silver, tin, lead and mercury have ... The section in the middle of the table is called the Transition Metals.

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 ...