helium

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The Simple English Wikipedia has an article on:

hydrogen 2 lithium

Pronunciation[change]

  • enPR: hē'lēəm
  • IPA: /ˈhiːlɪəm/
  • SAMPA: /"hi:li@m/
  • (file)
  • Hyphenation: he‧li‧um

Noun[change]

Singular
helium

Plural
none

  1. (uncountable) Helium is a colourless gas that has an atomic number of 2 and the symbol He.
    Sir, can you please fill my balloon up with helium, please?