Plutonium's in a part of the periodic table called the actinide series alongside its neighbours thorium and protoactinium. Seaborg christened the actinides, rearranging the periodic table in the ...

Currently, there are 118 known elements on the periodic table, from hydrogen all the way ... They bombarded the isotope plutonium-244 with additional neutrons and vaporized ions of titanium.

There are currently 118 known elements listed on the periodic table; from hydrogen ... by bombarding plutonium-244, an ...

The real neptunium sits between uranium and plutonium in the actinides, the floating bar on the periodic table that pops out from between radium and lawrencium. A silvery, metallic substance like so ...

Identified the actinide concept which led to the current arrangement of the actinoid series in the periodic table. While involved in the Manhattan Project, he developed the extraction process used to ...