what are the chemical properties of helium

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Gaseous chemical element,symbol: He,atomic number: 2 and atomic weight 4,0026 g/mol. Helium is one of the noble gases of group O in the periodic table. It鈥檚 the second lightest element. The main helium source in the world is a series of fields of natural gas in the United States. Helium is acolourless,odourless,insipid and non-toxic gas.

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