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atomic number 2
Noun
a very light colorless 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)
synonym
He
helium
hypernym
argonon
inert gas
noble gas
atomic number 2 vs He
atomic number 2 vs argonon
atomic number 2 vs helium
atomic number 2 vs inert gas
atomic number 2 vs noble gas
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