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what is helium
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A very light colourless gas which doesn't burn, often used to fill objects that flout in air like balloons...
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Helium is a chemical element with the symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements.
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