They have synthesized and characterized berkelocene, a new organometallic molecule featuring the rare and highly radioactive element berkelium ... uranium, neptunium, and plutonium, but the ...

JON CHASE:'In this case, the radioactive element that we are looking at, 'is something called americium. 'Americium is gradually decaying to become another element 'called neptunium. 'Neptuniam ...

The neptunium produced decayed by beta emission to form plutonium-238. In a matter of months, the chemical element with atomic number 94 was conclusively identified and its basic chemistry was ...