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Helium Synonyms & Antonyms

(uncountable) The second-lightest chemical element (symbol He), with an atomic number of 2 and atomic weight of 4.002602, a colorless, odorless and inert noble gas.

Synonyms

E939 when used as a packaging gasheatomic number 2

Antonyms

No direct antonyms were returned.

Related Words

heatomic number 2neongassuperfluidelement 2rare gasinert gasnoble gasalpha particlemonatomic gasliquid heliumcoolantcryogenlifting gashelium-3helium-4hydrogenhelionhelium hydride

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