Remember your periodic table from high school chemistry? As of Monday, it will look a little different. Four new elements have been added to the tail end of the familiar chart, completing the seventh ...

A longstanding mystery of the periodic table involves a group of unique elements called lanthanides. Also known as rare earth elements, or REEs, these silvery-white metals are challenging to isolate, ...

Chemistry buffs and scientists rejoice: Four new elements have been added to the periodic table, the International Union of Pure and Applied Chemistry has announced, completing the seventh row of the ...