krypton definition

  • noun:
    • A whitish, mostly inert gaseous element made use of chiefly in gas-discharge lights and fluorescent lights. Atomic quantity 36; atomic body weight 83.80; melting point -156.6°C; boiling point -152.30°C; thickness 3.73 grams per liter (0°C). See Table at factor.
    • A chemical factor (image Kr) with an atomic number of 36; the noble gases.
    • An inert gaseous element of the argon (noble gas) group, of atomic number 36, occurring in air to the extent of about one volume in a million. It was discovered by Ramsay and Travers in 1898. Boiling point, -152.3° C.; melting point, -156.6° C.; symbol, Kr; atomic weight, 83.8.
    • A chemical element, one of many five recently discovered gaseous constituents for the atmosphere, first obtained by Ramsay and Travers in 1898.
    • a colorless element that's one of the six inert gasses; takes place in trace quantities in air

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