The world's oldest classroom poster of the periodic table of elements, dating to 1885, has turned up in Scotland. Skip to main content. Open menu Close menu. Live Science.

A t the far end of the periodic table is a realm where nothing is quite as it should be. The elements here, starting at atomic number 104 (rutherfordium), have never been found in nature. In fact ...

The seventh row of the table was completed in 2016 when Tennessine, Nihonium, Moscovium, and Oganesson were added. Elements can be named after places, minerals, mythological figures , or people.

With the discovery, the girl with the Jemison poster on her wall had “claimed a seat at the periodic table,” Phelps said in her TEDx Talk. But despite the feat, Phelps again found herself ...

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 ...