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 ...

Four have filled gaps in the periodic table of 92 elements and five have extended it beyond uranium By I. Perlman & G. T. Seaborg Join Our Community of Science Lovers!

Synthetic chemists are excited about uranium's properties. Uranium brings the best of many worlds to the table: like the lanthanides, it generates electrophilic complexes that show high reactivity ...

artificial element above uranium in the periodic table. It seemed he had done this and in the process showed that slow-moving neutrons were more effective than high-energy neutrons for the task.

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 ...

DURING the course of investigations of catalysts for use in reactions between steam and hydrocarbons, it was found that by introducing uranium to the catalyst formulation a marked improvement in ...