The discovery of plutonium Plutonium is a relatively new addition to the periodic table. According to the Los Alamos National Laboratory, scientists first encountered it during World War Two.

"The creation of heavy elements such as uranium and plutonium necessitates extreme conditions," said physicist Matthew Mumpower.

To expand the periodic table, it might be time to go titanium ... The experiment focused a beam of titanium ions onto a target of plutonium. After 22 days of searching, the effort yielded two ...

Alongside elements of the periodic table (the graph we all got given chemistry ... he assumed he was allowed to possess the plutonium because “it was a minimal quantity”.

Lidden may have believed that he was allowed to possess the plutonium due to the tiny quantity involved. "You've been bitten by the bug! At some point you saw the periodic table of the elements ...

When the beam reached roughly 10 per cent of the speed of light and collided with the plutonium target ... chance to put a new element on the periodic table [is exciting]. So few people have ...