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- Helium - Wikipedia
Helium (from Ancient Greek: ἥλιος, romanized: helios, lit 'sun') is a chemical element; it has symbol He and atomic number 2 It is a colorless, odorless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table
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- Helium | Definition, Properties, Uses, Facts | Britannica
Helium is a chemical element, an inert gas of Group 18 (noble gases) of the periodic table The second lightest element, helium is a colorless, odorless, and tasteless gas that becomes liquid at -268 9 degrees Celsius
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- The world keeps running out of helium. There is now a race to . . . - BBC
Helium is an inert gas, which means that it does not react readily with other substances It has the lowest boiling point of any element at -269C (-452F) and a low density
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- Helium: An Endangered Element - American Chemical Society
The second most abundant element in the universe, helium is a product of nuclear fusion and radioactive decay It is the lightest noble gas, colorless, odorless, and inert with a low boiling point
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