That’s where Oak Ridge comes into the picture. By 1939 ... the highest atomic number in the periodic table. But element 61 was still not known to exist. During the Manhattan Project, workers ...

Test your knowledge and compete with other Live Science readers to see who can come top in our periodic table quiz. The ...

This year we celebrate the 150 th anniversary of Mendeleev’s achievement in formulating the structure of the periodic table that we use today. He announced his structure in 1869, but the challenge of ...

Thomas Purdie, a chemistry professor who worked at St Andrews, purchased the periodic table of elements chart in 1888. It likely hung in his classroom for years until he retired in 1909.