Neptunium
Videos
Neptunium is a chemical element; it has symbol Np and atomic number 93. A radioactive actinide metal, neptunium is the first transuranic element. It is named after Neptune, the planet beyond Uranus in
Sample of neptunium-237 in a glass vial
This nickel-clad neptunium sphere was used to experimentally determine the critical mass of Np at Los Alamos National Lab.
The 60-inch cyclotron at the Lawrence Radiation Laboratory, University of California, Berkeley, in August 1939
Neptunium ions in solution
Uranium
Videos
Uranium is a chemical element; it has symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6
Neptunium
…radioactive actinide metal, neptunium is the first transuranic element. It is named after Neptune, the planet beyond Uranus in the Solar System, which uranium is named after. A neptunium atom has 93 protons and 93 electrons, of which seven are valence electrons. Neptunium metal is silvery and tarnishes when…
HE Uranium C
Various militaries use depleted uranium as high-density penetrators.
Uranium glass glowing under UV light
The uranium glaze on a ceramic artwork glowing under UV light.