In 1871, Dimitri Mendeleev presented his periodic table to the world. Many of the current 118 elements were missing, and he left placeholders for those yet to be discovered. Each element has a unique story of scientific discovery.
In 1871, Dimitri Mendeleev presented his periodic table to the world. Many of the current 118 elements were missing, and he left placeholders for those yet to be discovered. Each element has a unique story of scientific discovery.