what is hiliyam gas?
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Helium (He), chemical element, inert gas of Group 18 (noble gases) of the periodic table. ... The second lightest element (only hydrogen is lighter), helium is a colourless, odourless, and tasteless gas that becomes liquid at −268.9 °C (−452 °F).
Atomic number: 2
Boiling point: −268.9 °C (−452 °F)
Oxidation state: 0
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helium is a chemical element and a noble gas it is the most lightest element. it is colourless odourless and tasteless its atomic number is 2
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