Roberto noted that for national security reasons, a copy of an updated periodic table was displayed in 1945 in a secure place at the Y-12 electromagnetic plant for workers involved in isotope ...

Today the periodic table is the starting point for understanding chemistry. On the wall of every laboratory or school chemistry department you are likely to find hung a copy where chemists and student ...

For the last fifty or so years, the periodic table has been incomplete. Elements after uranium on the periodic table have been synthesized for the past few decades, but there were always a few ...