Neptunium, element 93 on the periodic table of elements, was the first transuranium element to be produced synthetically and the first actinide series transuranium element to be discovered. Its ...

Edwin McMillan and Philip H. Abelson first produced neptunium at the University of California in 1940. The scientists bombarded uranium-238 atoms with neutrons to chemically produce neptunium-239, ...

Physicists have gained new insight into the origins of superconductivity -- a property of metals where electrical resistance vanishes -- by studying exotic chemical compounds that contain neptunium ...

Scientists first created the artificial element neptunium in 1940, around the time they made the first atoms of plutonium. But because plutonium turned out to be so much better for nuclear weapons, ...

Jim Ibers talks about neptunium, an element that has remained largely unnoticed despite the flurry of activity devoted to its neighbours in the periodic table, uranium and plutonium. The actinides, ...

Oxidation is the process where atoms lose electrons during a chemical reaction. Among the radioactive elements, neptunium and plutonium are much harder to oxidize than uranium. To study these elements ...

It’s difficult to make molecules using elements that lie beyond uranium on the periodic table, which has hampered progress in studying how actinides form bonds. Now chemists have expanded the library ...

Not much is known about the properties of neptunium, a highly radioactive man-made material that is a byproduct of nuclear reactors, except that it emits alpha, beta and gamma radioactivity. The ...

In a recent paper published in The European Physical Journal D, researchers from Johannes Gutenberg University Mainz, Germany, have demonstrated a method for more precise ionization measurements of ...