What is the lightest gas in air?

Answer

hydrogen its in the table of the elements.
Q&A Related to "What is the lightest gas in air?"
With an atomic weight of barely over 1, hydrogen is the lightest gas and the lightest
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Hydrogen: Each mole of H2 weight 2g and has a volume of ~22 litres. each molecule has 2 electrons and 2 protons and no neutrons (very little deuterium or tritium anyway) the next
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The answer is helium (He): Hydrogen is the lightest with a density of 0.0899 kg/m^3 Helium is second with a density of 0.1664 kg/m^3 For comparison, air has a density of 1.293 kg/
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Hydrogen is the lightest gas and the lightest element. The atomic weight of hydrogen is 1.00794(7) ‰g*mol ˆ’1, and a molecular weight of 2.016 ...
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