- a rather light colorless element that is one of the six inert gasses; the most challenging gasoline to liquefy; occurs in financially extractable quantities in some all-natural gases (as the ones that are in Texas and Kansas)
- a really light colorless factor that is one of the six inert gasses; the most difficult fuel to liquefy; takes place in economically extractable quantities using normal gases (as the ones that are in Tx and Kansas)
Hypernym for "atomic number 2"
- chemical element
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