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Noun: atomic number 2
  1. A very light colourless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)
    - helium, He

Type of: argonon, inert gas, noble gas

Encyclopedia: Atomic number 2

Nearest

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atomic number 2
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atomic number 22
atomic number 23
atomic number 24
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atomic number 27
atomic number 28
atomic number 29