Science / Chemistry / Cryogen: A gas that has been liquified by lowering temperature, usually to a temperature under about -100?°C.
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Technology / Rockets / Cryogenic: Temperature at which gases liquefy at atmospheric pressure. MORE
Science / Periodic Table of Elements / Neon (Ne): Atomic number: 10, Atomic mass: 20.179 g.mol -1, Electronegativity: unknown, Density: 0.9*10 -3 g.cm-3 at 20?°C, Melting point: -249 ?°C, Boiling point: -246 ?°C, Vanderwaals radius: 0.16 nm, Ionic MORE
