Since Mendeleev's time, scientists have discovered new elements, expanding the periodic table. The most recent additions include nihonium, moscovium, tennessine, and oganesson, which were officially ...

The periodic table looks complete, but it isn’t. The race is on to discover the table’s next row of elements, starting with elements 119 and 120. Japan hopes to produce element 119 one atom at ...

A table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns.

Want to learn more about this centerpiece of chemistry? Take your pick from this collection of links about elements and the periodic table! Build an element ball, solve periodic puzzles, and check out ...

Since the turn of the century, six new chemical elements have been discovered and subsequently added to the periodic table of elements, the very icon of chemistry. These new elements have high ...

A table of the chemical ... Copper has been used by humans for as much as 7000 years and elements such as gold, silver, tin, lead and ... Groups in the periodic table contain elements ...