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.

In the 1980s and 1990s, Roberto noted, scientists at the GSI Helmholtz Centre for Heavy Ion Research in Darmstadt, Germany, ran “cold fusion” experiments that extended the periodic table from element ...