helium
Pronunciation:
/ˈhiːli.əm/noun
Definitions
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.
A form or sample of the element.
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/ˈhiːli.əm/Definitions
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.
A form or sample of the element.