which of these is never found as a free element in nature Helium Uranium
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Answer:it's Uranium because helium is the second most abundant element in the universe.
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Explanation:
Helium is a chemical element with the symbol He and atomic number 2. It is a colorless, ... In 1903, large reserves of helium were found in natural gas fields in parts of the ... of heavy radioactive elements (thorium and uranium, although there are other ... (of about 32 to 50 K at 1 atmosphere) does it cool upon free expansion.
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