Dental Care Fluoride
Uranium is weakly radioactive due to the fact all isotopes of uranium are unstable, with half-lives varying between 159,200 years and 4.five billion years. [newline]Uranium has the highest atomic weight of the primordially occurring components. Its density is about 70% greater than that of lead, and slightly reduced than that of gold or tungsten. Samariumis a chemical element with atomic number62which...