Can quantum ideas explain chemistry's greatest icon?
Simplistic assumptions about the periodic table lead us astray, warns Eric Scerri.
Brigitte Van Tiggelen and Annette Lykknes spotlight female researchers who discovered elements and their properties.
The first synthetic element
When Mendeleev proposed his periodic table in 1869, element 43 was unknown. In 1937, it became the first element to be discovered by synthesis in a laboratory — paving the way to the atomic age.Kit Chapman