Which silvery, radioactive metal, Atomic Number 93, was named after one of the major planets?
Neptunium Neptunium Neptunium is a chemical element with symbol Np and atomic number 93. A radioactive actinide metal, neptunium is the first transuranic element. Its position in the periodic table just after uranium, named after the planet Uranus, led to it being named after Neptune, the next planet beyond Uranus. A neptunium atom has 93 protons and 93 electrons, of which seven are valence electrons. Neptunium metal is silvery and tarnishes when exposed to air. The element occurs in three allotropic forms and it normally exhibits five oxidation states, ranging from +3 to +7. It is radioactive, poisonous, pyrophoric, and can
Radioactive scrap metal atmosphere. The impure metal from the furnace may be further refined in an electrochemical process. If the copper refinery includes an electrochemical process after the furnace, then unwanted elements are removed from the impure metal and deposited as anode slime. Radioactive scrap metal Radioactive scrap metal is created when radioactive material enters the metal recycling process and contaminates scrap metal. A "lost source accident" occurs when a radioactive object is lost or stolen. Such objects may appear in the scrap metal industry if people mistake them for harmless bits of metal. The International Atomic Energy Agency has provided guides for