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  2. Uranium - Wikipedia

    en.wikipedia.org/wiki/Uranium

    [11] [12] Uranium metal has a very high density of 19.1 g/cm 3, [13] denser than lead (11.3 g/cm 3), [14] but slightly less dense than tungsten and gold (19.3 g/cm 3). [15] [16] Uranium metal reacts with almost all non-metallic elements (except noble gases) and their compounds, with reactivity increasing with temperature. [17]

  3. Promethium is not an easy image to find, however, out of all the elements without a picture, it is one of the two most likely to have a picture discovered. The only pictures floating around the place are of promethium chloride and promethium oxide, but not the metal itself. This is likely because the metal is not used for anything, it's hard to ...

  4. File:Uranium.svg - Wikipedia

    en.wikipedia.org/wiki/File:Uranium.svg

    Uranium is a chemical element that has the symbol U and atomic number 92. Source: Own work based on: Uranium.gif: Author: Original: Techni-Tom ...

  5. Wikipedia : WikiProject Elements/Pictures/Element Picture ...

    en.wikipedia.org/.../Element_Picture_Progress

    Promethium is not an easy image to find, however, out of all the elements without a picture, it is one of the two most likely to have a picture discovered. The only pictures floating around the place are of promethium chloride and promethium oxide, but not the metal itself. This is likely because the metal is not used for anything, it's hard to ...

  6. Properties of metals, metalloids and nonmetals - Wikipedia

    en.wikipedia.org/wiki/Properties_of_metals...

    Uranium. The only element with a naturally occurring isotope capable of undergoing nuclear fission is uranium. [146] The capacity of uranium-235 to undergo fission was first suggested (and ignored) in 1934, and subsequently discovered in 1938. [n 28] Plutonium. It is normally true that metals reduce their electrical conductivity when heated.

  7. The Weird and Wonderful World of Radioactive Glassware ... - AOL

    www.aol.com/weird-wonderful-world-radioactive...

    This is when uranium glass reached the height of its popularity in the United States between 1958 and 1978, with more than 4 million pieces of decorative uranium produced, according to Oak Ridge ...

  8. Uranium-235 - Wikipedia

    en.wikipedia.org/wiki/Uranium-235

    Uranium-235 (235 U or U-235) is an isotope of uranium making up about 0.72% of natural uranium. Unlike the predominant isotope uranium-238, it is fissile, i.e., it can sustain a nuclear chain reaction. It is the only fissile isotope that exists in nature as a primordial nuclide. Uranium-235 has a half-life of 703.8 million years.

  9. Nuclear material - Wikipedia

    en.wikipedia.org/wiki/Nuclear_material

    Nuclear material refers to the metals uranium, plutonium, and thorium, in any form, according to the IAEA.This is differentiated further into "source material", consisting of natural and depleted uranium, and "special fissionable material", consisting of enriched uranium (), uranium-233, and plutonium-239.