Sentit | 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). |
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Sinònim | número atòmic 2 |
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General | argonon, gas inert, gas noble, gas rar | Any of the chemically inert gaseous elements of the helium group in the periodic table |
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element, element químic | Any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter |
Anglès | helium, He, atomic number 2 |
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Espanyol | helio, número atómico 2 |
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